This lesson test gives you 15 ASVAB-style Arithmetic Reasoning questions focused on the step where most errors begin: setting up the problem. You will meet reverse relationships, multi-step costs, ratios, percentage reversals, unit conversions and word problems with extra information meant to distract you.
A warehouse crew ships 18 crates each day for 5 days in a row. How many crates does the crew ship in all?
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Answer: C
Correct answer: 90 crates. The same amount, 18 crates, is repeated for 5 days, so the setup is
18×5=90
crates.
A: Adding 18 and 5 combines a rate with a count of days instead of repeating the daily amount.
B: Subtracting 5 from 18 has no meaning in this story; nothing is being removed.
C (correct): Five days of 18 crates each is equal groups, so multiply: 18 times 5 = 90.
D: Dividing 18 by 5 splits the daily amount instead of building a total from repeated groups.
Question 2 of 15 · easy
A convoy must travel 300 miles to reach a training site. It has already covered 128 miles. How many miles does it still have to travel?
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Answer: C
Correct answer: 172 miles. Name the unknown as the remaining distance x. Then
128+x=300
so
x=300−128=172miles
A: Adding 300 and 128 treats the distance already covered as extra distance beyond the whole trip.
B: This is the length of the whole trip, not the part that is left.
C (correct): The remaining distance is the missing part of a known total: 300 - 128 = 172.
D: This comes from a borrowing slip in 300 - 128; checking 182 + 128 gives 310, not 300.
Question 3 of 15 · easy
Nine less than a number is 23. What is the number?
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Answer: A
Correct answer: 32. \"Nine less than a number\" means start with the number and take 9 away:
x−9=23
Add 9 to both sides to get
x=32
Check:
32−9=23
A (correct): Writing the sentence as x - 9 = 23 and adding 9 to both sides gives x = 32.
B: This comes from reversing the order and writing 9 - x = 23.
C: Subtracting 9 from 23 runs the story backward; 14 - 9 is 5, not 23.
D: Multiplying 9 by 23 uses an operation the sentence never describes.
Question 4 of 15 · easy
A motor pool reports that 86 drivers at Site A and 59 drivers at Site B have finished winter driving training. How many more drivers have finished at Site A than at Site B?
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Answer: D
Correct answer: 27 drivers. Comparing two amounts calls for subtraction:
86−59=27
more drivers at Site A. Check:
59+27=86
A: This is a borrowing slip in 86 - 59; adding 37 + 59 gives 96, not 86.
B: This is the Site B count from the story, not the difference between the sites.
C: Adding the two counts gives a combined total, but the question asks for a comparison.
D (correct): A "how many more" comparison asks for the difference: 86 - 59 = 27.
Question 5 of 15 · medium
Which equation matches the sentence \"Twice the sum of a number and 9 is 50\"?
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Answer: D
Correct answer:
2(x + 9) = 50
\"The sum of a number and 9\" is x+9. \"Twice\" that sum doubles the whole group, so use parentheses:
2(x+9)=50
A: This doubles the 9 instead of doubling the whole sum of the number and 9.
B: This doubles only the number and then adds 9, but the words say to form the sum first.
C: "Twice" means multiply by 2, not add 2.
D (correct): The sum of the number and 9 is formed first inside parentheses, and then that whole sum is doubled.
Question 6 of 15 · medium
A soldier buys 3 shirts at $14 each and 2 caps at $9 each. She pays with a $100 bill. How much change should she receive?
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Answer: A
Correct answer: $40. Cost:
3×14+2×9=42+18=60dollars
Change:
100−60=40dollars
A (correct): The purchase costs 3 x 14 + 2 x 9 = 60 dollars, and 100 - 60 leaves 40 dollars in change.
B: This subtracts the shirts (42 dollars) but forgets to include the cost of the caps.
C: This is the cost of the purchase, not the change the question asks for.
D: This subtracts only one shirt and one cap (14 + 9 = 23) instead of the full quantities bought.
Question 7 of 15 · medium
A supply truck travels at an average speed of 48 miles per hour for 2 hours 45 minutes. How far does it travel?
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Answer: C
Correct answer: 132 miles. Convert the time first:
6045=0.75
so the time is 2.75 hours. Distance = rate x time =
48×2.75=132miles
A: This rounds the trip up to 3 hours, which adds 15 minutes of driving that never happened.
B: This uses only the 2 full hours and ignores the extra 45 minutes.
C (correct): Since 45 minutes is 0.75 hour, the time is 2.75 hours and 48 x 2.75 = 132 miles.
D: This treats 2 hours 45 minutes as 2.45 hours, but minutes are sixtieths of an hour, not hundredths.
Question 8 of 15 · medium
A company has 260 soldiers. On the rifle range, 35 percent of them qualified as experts. How many soldiers qualified as experts?
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Answer: D
Correct answer: 91 soldiers. \"35 percent of 260\" means multiply after converting the percent:
0.35×260=91
soldiers.
A: This is the 65 percent who did not qualify as experts, the other part of the group.
B: This subtracts 35 from 260 as if the percent were a number of soldiers.
C: This multiplies by 35 instead of 0.35, forgetting to change the percent to a decimal.
D (correct): Change 35 percent to 0.35 and multiply: 0.35 x 260 = 91.
Question 9 of 15 · medium
A mechanic uses 6 quarts of coolant to service 4 vehicles. At the same rate, how many quarts are needed to service 14 vehicles?
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Answer: B
Correct answer: 21 quarts. Keep matching units in matching positions:
46=14x
Each vehicle needs
6÷4=1.5quarts
so
x=1.5×14=21quarts
A: This multiplies 6 quarts by 14 vehicles, treating 6 quarts as the amount for a single vehicle.
B (correct): The proportion 6/4 = x/14 keeps quarts on top on both sides, giving x = 21.
C: This flips one ratio, putting vehicles over quarts on one side and quarts over vehicles on the other.
D: This adds 10 quarts because the vehicle count rose by 10, but a rate scales by multiplying, not adding.
Question 10 of 15 · medium
A cargo truck that weighs 12,000 pounds is loaded with 25 boxes. Each box holds 24 rations. At the first stop, 3 full boxes are unloaded. How many rations are still on the truck?
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Answer: C
Correct answer: 528 rations. The truck's weight is extra information. Boxes left:
25−3=22
Rations left:
22×24=528
A: This is the number of rations unloaded, not the number still on the truck.
B: This is the starting load of 25 boxes; it forgets that 3 boxes were unloaded.
C (correct): After unloading, 25 - 3 = 22 boxes remain, and 22 x 24 = 528 rations.
D: This subtracts 3 rations instead of 3 boxes of 24 rations each.
Question 11 of 15 · medium
On a 72-question practice test, a recruit answered 54 questions correctly. What percent of the questions did she miss?
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Answer: B
Correct answer: 25 percent. Missed questions:
72−54=18
Percent = part / whole:
18÷72=0.25
which is 25 percent.
A: This uses the number of missed questions as if it were already a percent.
B (correct): She missed 72 - 54 = 18 questions, and 18 / 72 = 0.25, or 25 percent.
C: This is the percent she answered correctly (54 out of 72), not the percent she missed.
D: This divides 18 by 54, comparing missed to correct instead of missed to the whole test.
Question 12 of 15 · hard
After a 20 percent price increase, a pair of work boots costs $54. What was the price before the increase?
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Answer: A
Correct answer: $45.00. After a 20 percent increase, the new price is 120 percent of the original:
1.20x=54
Divide:
x=54÷1.20=45dollars
Check: 20 percent of 45 is 9, and
45+9=54
A (correct): The new price is 120 percent of the old price, so 1.20x = 54 and x = 45.
B: This raises the new price by another 20 percent, moving in the wrong direction.
C: This subtracts 20 dollars, treating the percent as a dollar amount.
D: This subtracts 20 percent of the new price, but the 20 percent was figured on the old price.
Question 13 of 15 · hard
At a depot, the ratio of trucks to trailers is 4:7. There are 99 trucks and trailers in all. How many trailers are there?
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Answer: A
Correct answer: 63 trailers. A 4:7 ratio splits the total into
4+7=11
equal parts. Each part is
99÷11=9
vehicles, so there are
7×9=63
trailers (and 36 trucks, for 99 in all).
A (correct): The ratio has 4 + 7 = 11 parts, each worth 99 / 11 = 9, so trailers are 7 x 9 = 63.
B: This is the number of trucks (4 parts of 9), not the number of trailers.
C: This divides 99 by 7 and multiplies by 4, treating 7 as the total number of parts.
D: This is how many more trailers there are than trucks (3 parts), not the trailer count.
Question 14 of 15 · hard
A rectangular storage yard is 42 feet long and 25 feet wide. One 42-foot side runs along a building wall, so fencing is needed only along the remaining sides. Fencing costs $8 per foot. What is the cost of the fencing?
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Answer: D
Correct answer: $736. Fencing follows the edge, so this is a perimeter question. Fenced length:
42+25+25=92feet
Cost:
92×8=736dollars
A: This multiplies the area, 1,050 square feet, by the price; fencing is a length, not an area.
B: This fences the full perimeter of 134 feet, including the side along the building.
C: This leaves out a 25-foot side instead of the 42-foot side along the wall.
D (correct): The three sides measure 42 + 25 + 25 = 92 feet, and 92 x 8 = 736 dollars.
Question 15 of 15 · hard
A pump moves 18 gallons of water per minute. How many hours will it take to fill an empty 4,860-gallon tank?
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Answer: B
Correct answer: 4.5 hours. Time = amount / rate:
4,860÷18=270minutes
Convert to hours:
270÷60=4.5hours
A: This is the time in minutes; the question asks for hours.
B (correct): The tank takes 4,860 / 18 = 270 minutes, and 270 / 60 = 4.5 hours.
C: This divides 270 minutes by 100 instead of by 60 minutes per hour.
D: This reads 4 hours 30 minutes as 4.3 hours, but 30 minutes is half an hour.
Five more than four times a number is 53. What is the number?
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Answer: B
Correct answer: 12. Build four times the number first, then add 5:
4x+5=53
Subtract 5 to get
4x=48
then divide by 4:
x=12
Check:
4×12+5=53
A: This comes from 4x - 5 = 53, which subtracts 5 instead of adding it.
B (correct): Writing the sentence as 4x + 5 = 53 gives 4x = 48, so x = 12.
C: This comes from 4(x + 5) = 53, which adds 5 before multiplying even though the words build four times the number first.
D: This divides 53 by 4 and ignores the 5 that was added.
Practice 2 of 35 · medium
An electrician buys 5 outlet covers at $3 each and 2 rolls of wire at $28 each. He pays with four $20 bills. How much change should he get?
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Answer: A
Correct answer: $9. First find the cost:
5×3+2×28=15+56=71dollars
Then find the change:
80−71=9dollars
A (correct): The purchase costs 5 x $3 + 2 x $28 = $15 + $56 = $71, and $80 - $71 = $9.
B: This is the cost of the purchase, an in-between number, not the change asked for.
C: This counts only one roll of wire: $15 + $28 = $43, and $80 - $43 = $37.
D: This adds one of each price ($3 + $28 = $31) instead of multiplying by the quantities.
Practice 3 of 35 · medium
A delivery van used 14 gallons of fuel to travel 378 miles. At the same mileage, how many gallons will it use on a 621-mile trip?
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Answer: A
Correct answer: 23 gallons. Find the rate first:
378÷14=27miles
per gallon.
Then divide the new distance by the rate:
621÷27=23gallons
A (correct): The van gets 378 / 14 = 27 miles per gallon, and 621 / 27 = 23 gallons.
B: This is the mileage rate in miles per gallon, an in-between step rather than the fuel needed.
C: This covers only the extra 243 miles beyond the first trip (243 / 27 = 9), not the whole 621-mile trip.
D: This adds the first trip's 14 gallons to the 23 gallons the new trip needs.
Practice 4 of 35 · medium
A pancake recipe uses 3 cups of flour to make 20 pancakes. How many cups of flour are needed to make 50 pancakes?
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Answer: C
Correct answer: 7.5 cups. Keep cups on top in both ratios:
203=50x
Cross-multiply:
20x=150
so
x=7.5cups
A: This is 50 / 20, the scale factor, without multiplying it by the 3 cups in the recipe.
B: This simply doubles the recipe, which makes 40 pancakes, not 50.
C (correct): Setting 3/20 = x/50 gives x = 3 x 50 / 20 = 7.5 cups.
D: This adds the 30 extra pancakes to the 3 cups, mixing pancakes with cups.
Practice 5 of 35 · hard
During a sale, a portable generator is marked 25 percent off. The sale price is $510. What was the original price?
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Answer: D
Correct answer: $680. A 25 percent discount leaves 75 percent of the original price, so
0.75x=510
Divide:
x=510÷0.75=680
Check: 25 percent of 680 is 170, and
680−170=510
A: This adds 25 percent of the sale price to $510, but the discount was taken from the larger original price.
B: This takes another 25 percent off the sale price, which moves in the wrong direction.
C: This divides by 0.25, the discount, instead of by 0.75, the part of the price that remains.
D (correct): After a 25 percent discount, 75 percent of the price remains, so 0.75x = 510 and x = $680.
Practice 6 of 35 · easy
A bakery puts 24 muffins on each tray. It fills 7 trays. How many muffins are on the trays?
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Answer: B
Correct answer: 168 muffins. Equal groups call for multiplication:
24×7=168
muffins.
A: This adds 24 and 7, but the story describes equal groups, which calls for multiplication.
B (correct): Seven equal groups of 24 is 24 x 7 = 168.
C: This subtracts 7 from 24, which does not match anything happening in the story.
D: This is 24 x 6, one tray short of the 7 trays filled.
Practice 7 of 35 · easy
Which expression represents "6 fewer than three times a number"?
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Answer: A
Correct answer: 3x - 6. Build "three times a number" first as 3x. "6 fewer than" that amount means take 6 away from it, giving 3x−6.
A (correct): Start with three times the number, 3x, and take 6 away from it.
B: This reverses the order; "6 fewer than" means 6 is subtracted from the other quantity.
C: This subtracts 6 before multiplying, but the words build three times the number first.
D: "Fewer than" means subtract, not add.
Practice 8 of 35 · medium
At a clinic, the ratio of nurses to doctors is 7:2. There are 8 doctors. How many nurses are there?
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Answer: C
Correct answer: 28 nurses. Keep nurses on top in both ratios:
27=8x
Since
8=2×4
each ratio part stands for 4 people, so nurses
=7×4=28
A: This is the total number of nurses and doctors, 28 + 8, not the number of nurses.
B: This adds the difference of 5 between the ratio numbers to 8, but ratios scale by multiplying, not adding.
C (correct): Since 8 = 2 x 4, each ratio part is 4 people, so there are 7 x 4 = 28 nurses.
D: This multiplies 8 by 2, using the doctors' ratio number instead of the nurses'.
Practice 9 of 35 · hard
A crew will paint both sides of a straight fence that is 120 feet long and 6 feet high. One gallon of paint covers 350 square feet, and paint is sold only in whole gallons. How many gallons must the crew buy?
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Answer: A
Correct answer: 5 gallons. Paint covers a surface, so find area. One side is
120×6=720square feet
and both sides are
2×720=1,440square feet
Gallons:
1,440÷350≈4.1
Since 4 gallons would fall short, the crew must buy 5 gallons.
A (correct): Both sides cover 2 x 120 x 6 = 1,440 square feet; 1,440 / 350 is about 4.1, so 5 whole gallons are needed.
B: This rounds 4.1 down, which leaves part of the fence unpainted.
C: This paints only one side: 720 / 350 is about 2.1, rounded up to 3.
D: This paints only one side and also rounds down.
Practice 10 of 35 · easy
After a library lent out 47 books on Saturday, 156 books were left on the display shelves. How many books were on the shelves before any were lent out?
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Answer: B
Correct answer: 203 books. The unknown is the starting count. The story is start minus lent equals left:
x−47=156
Add 47 to both sides:
x=203
Check:
203−47=156
A: This subtracts 47 from 156, running the story backward because of the word "left."
B (correct): Start minus lent equals left, so x - 47 = 156 and x = 156 + 47 = 203.
C: This is an addition slip; 156 + 47 is 203, not 193.
D: This is the number left after lending, not the starting number.
Practice 11 of 35 · medium
A tool kit regularly priced at $85 is on sale for 30 percent off. What is the sale price?
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Answer: C
Correct answer: $59.50. Convert the percent to a decimal: 30 percent is 0.30. The discount is
0.30×85=25.50dollars
Sale price:
85−25.50=59.50dollars
Equivalently,
0.70×85=59.50
A: This is the amount of the discount, not the price after the discount.
B: This subtracts 30 dollars instead of 30 percent of the price.
C (correct): The discount is 0.30 x $85 = $25.50, and $85 - $25.50 = $59.50.
D: This subtracts 0.30 dollars, treating 30 percent as 30 cents.
Practice 12 of 35 · easy
An office printer prints 36 pages per minute. How many pages does it print in 12 minutes?
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Answer: B
Correct answer: 432 pages. Pages per minute times minutes leaves pages:
36×12=432
pages.
A: This adds the rate and the time instead of multiplying them.
B (correct): A rate times time gives a total: 36 x 12 = 432 pages.
C: This divides 36 by 12, which would split a total, not build one from a rate.
D: This subtracts 12 from 36, which has no meaning in this story.
Practice 13 of 35 · easy
A volunteer packs a dozen water bottles into each of 9 boxes. The boxes are then loaded onto a 40-foot trailer. How many water bottles were packed?
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Answer: D
Correct answer: 108 bottles. "A dozen" means 12, and the trailer length is extra information. Nine equal boxes of 12 give
9×12=108
bottles.
A: This adds 12 and 9 instead of multiplying for equal groups.
B: This multiplies the 9 boxes by the trailer length, a number that has nothing to do with the bottles.
C: This multiplies a dozen by the trailer length, which is an extra fact.
D (correct): A dozen is 12, and 9 boxes of 12 is 9 x 12 = 108 bottles.
Practice 14 of 35 · easy
A training shift lasts 3 hours 45 minutes. Written as a decimal, how many hours is that?
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Answer: C
Correct answer: 3.75 hours. Minutes are sixtieths of an hour:
6045=0.75hour
So 3 hours 45 minutes is
3+0.75=3.75hours
A: This treats the minutes as hundredths of an hour, but minutes are sixtieths of an hour.
B: This divides 60 by 45 instead of 45 by 60.
C (correct): Since 45 minutes is 45/60 = 0.75 hour, the shift is 3.75 hours.
D: This finds 225 total minutes but then divides by 100 instead of 60.
Practice 15 of 35 · medium
An inspection team scheduled 35 safety inspections for the week and finished 28 of them. What percent of the scheduled inspections did it finish?
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Answer: C
Correct answer: 80 percent. To find what percent one number is of another, divide part by whole:
28÷35=0.80
Multiply by 100 to get 80 percent.
A: This divides the whole by the part, 35 / 28, which flips the comparison.
B: This is the percent left unfinished, 7 / 35, not the percent finished.
C (correct): Part divided by whole is 28 / 35 = 0.80, or 80 percent.
D: This is the number of unfinished inspections, a count rather than a percent.
Practice 16 of 35 · medium
A cyclist rides 39 miles in 2 hours 10 minutes. What is her average speed?
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Answer: D
Correct answer: 18 mph. Convert the time: 10 minutes is
6010=61hour
so the time is
261=613hours
Speed is distance divided by time:
39÷613=39×136=18miles
per hour.
A: This treats 2 hours 10 minutes as 2.10 hours, reading minutes as a decimal.
B: This ignores the 10 minutes and divides by 2 hours only.
C: This multiplies distance by time instead of dividing distance by time.
D (correct): 2 hours 10 minutes is 2 1/6 hours, and 39 / (13/6) = 18 miles per hour.
Practice 17 of 35 · hard
A volunteer group has 72 members. The ratio of adults to teenagers in the group is 5:3. How many more adults than teenagers are in the group?
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Answer: C
Correct answer: 18. The ratio 5:3 has
5+3=8
parts, so each part is
72÷8=9
people.
Adults:
5×9=45
Teenagers:
3×9=27
Difference:
45−27=18
which is also (5−3)×9.
A: This is the number of adults, an in-between value rather than the difference asked for.
B: This is the number of teenagers, not how many more adults there are.
C (correct): The ratio has 8 parts, so each part is 72 / 8 = 9 people; adults are 45, teenagers are 27, and 45 - 27 = 18.
D: This subtracts the ratio numbers, 5 - 3, without scaling them to the actual group size.
Practice 18 of 35 · medium
A rectangular garden bed is 18 feet long and 11 feet wide. Edging for the border is sold in 8-foot sections. How many sections are needed to go all the way around the bed?
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Answer: C
Correct answer: 8 sections. Edging goes around the border, so find perimeter:
2(18+11)=58feet
Sections:
58÷8=7.25
Seven sections cover only 56 feet, so 8 sections are needed.
A: This rounds 7.25 down, which leaves 2 feet of the border without edging.
B: This uses the area, 198 square feet, but edging runs along the border, which is a perimeter.
C (correct): The perimeter is 2(18 + 11) = 58 feet; 58 / 8 = 7.25, so 8 whole sections are needed.
D: This uses only one length and one width, 29 feet, which is half the perimeter.
Practice 19 of 35 · hard
A bus travels at 55 miles per hour for 2 hours 24 minutes, then at 40 miles per hour for 1 hour 36 minutes. What total distance does the bus travel?
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Answer: B
Correct answer: 196 miles. Convert minutes: 24 minutes is
6024=0.4hour
and 36 minutes is
6036=0.6hour
First leg:
55×2.4=132miles
Second leg:
40×1.6=64miles
Total:
132+64=196miles
A: This reads the times as 2.24 and 1.36 hours, treating minutes as hundredths of an hour.
B (correct): The legs are 2.4 hours and 1.6 hours, so the distance is 55 x 2.4 + 40 x 1.6 = 132 + 64 = 196 miles.
C: This averages the two speeds to 47.5 mph over 4 hours, but the bus spent more time at the faster speed.
D: This is only the first leg of the trip, an in-between total.
Practice 20 of 35 · hard
A repair invoice lists 3 hours of labor at $72 per hour and $145 in parts. An 8 percent sales tax is charged on the parts only. What is the total of the invoice?
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Answer: B
Correct answer: $372.60. Labor:
3×72=216dollars
Tax on parts only:
0.08×145=11.60dollars
Total:
216+145+11.60=372.60dollars
A: This charges the 8 percent tax on labor as well as parts.
B (correct): Labor is $216, tax on parts is 0.08 x $145 = $11.60, and $216 + $145 + $11.60 = $372.60.
C: This leaves out the sales tax and stops at the subtotal.
D: This adds 8 dollars of tax instead of 8 percent of the parts cost.
Practice 21 of 35 · easy
A shelf board is 5 feet 8 inches long. How long is the board in inches?
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Answer: D
Correct answer: 68 inches. Convert to one unit:
5×12=60inches
then add the extra 8 inches:
60+8=68inches
A: This treats a foot as 10 inches instead of 12.
B: This adds the 5 and the 8 without converting feet to inches.
C: This converts the 5 feet but forgets to add the extra 8 inches.
D (correct): Each foot is 12 inches, so 5 x 12 + 8 = 60 + 8 = 68 inches.
Practice 22 of 35 · hard
Dana spent one-third of her money on a jacket. She then spent $24 on lunch and had $56 left. How much money did she have at the start?
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Answer: D
Correct answer: $120. Work backward from the end. Before lunch she had
56+24=80dollars
After spending one-third on the jacket, two-thirds remained, so
32x=80
and
x=120dollars
Check: one-third of 120 is 40,
120−40−24=56
A: This undoes the lunch but stops before undoing the jacket purchase.
B: This undoes the steps in the wrong order, scaling $56 up first and adding $24 last.
C: This treats the $80 as one-third of her money instead of the two-thirds left after the jacket.
D (correct): Before lunch she had $56 + $24 = $80, which is two-thirds of her money, so she started with $80 / (2/3) = $120.
Practice 23 of 35 · medium
A hospital ward on the fifth floor has 6 rooms. Each room has 4 beds, and each bed gets 2 pillows. How many pillows does the ward need?
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Answer: A
Correct answer: 48 pillows. The floor number does not connect to the question. Beds:
6×4=24
Pillows:
24×2=48
A (correct): Beds: 6 x 4 = 24; pillows: 24 x 2 = 48.
B: This is the number of beds, an in-between total, not the number of pillows.
C: This also multiplies by 5, but the floor number is extra information.
D: This adds 6, 4 and 2 instead of multiplying for equal groups.
Practice 24 of 35 · easy
A theater sold 198 tickets at $11 each. Without calculating exactly, which amount is closest to the total collected?
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Answer: C
Correct answer: $2,200. Round to friendly numbers:
200×11=2,200dollars
The exact value,
198×11=2,178dollars
confirms the estimate.
A: This is ten times too small; 200 tickets at about $10 each is about $2,000.
B: This is ten times too large, likely from a misplaced zero.
C (correct): Rounding 198 to 200 gives 200 x $11 = $2,200, very close to the exact $2,178.
D: This adds 198 and 11 instead of multiplying tickets by price.
Practice 25 of 35 · medium
When 15 is subtracted from three times a number, the result is 48. What is the number?
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Answer: B
Correct answer: 21. Translate in order: three times a number is 3x, and subtracting 15 from it gives
3x−15=48
Add 15:
3x=63
Divide by 3:
x=21
A: This comes from 3x + 15 = 48, which adds 15 instead of subtracting it.
B (correct): The sentence is 3x - 15 = 48, so 3x = 63 and x = 21.
C: This comes from 3(x - 15) = 48, which subtracts before multiplying.
D: This divides 48 by 3 and ignores the 15 that was subtracted.
Practice 26 of 35 · hard
A patio that is 15 feet by 12 feet will be covered with square tiles that are 18 inches on each side. How many tiles are needed to cover the patio exactly?
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Answer: C
Correct answer: 80 tiles. Patio area:
15×12=180square feet
Convert the tile side: 18 inches is 1.5 feet, so each tile covers
1.5×1.5=2.25square feet
Tiles:
180÷2.25=80
(Check by rows: 10 tiles along 15 feet and 8 along 12 feet give 80.)
A: This divides the area by 1.5, the tile's side length, instead of by the tile's area.
B: This divides 180 square feet by 18 without converting inches to feet or finding the tile's area.
C (correct): Each tile is 1.5 ft by 1.5 ft = 2.25 square feet, and 180 / 2.25 = 80 tiles.
D: This treats 18 inches as 1.8 feet, mixing up inches with tenths of a foot.
Practice 27 of 35 · medium
A typist enters 1,800 words in 45 minutes. At this rate, how many words does she type per hour?
Show the answer
Answer: A
Correct answer: 2,400 words. Find the rate per minute:
1,800÷45=40
words per minute.
Scale to an hour:
40×60=2,400
words per hour. Or divide by 0.75 hour:
1,800÷0.75=2,400
A (correct): Her rate is 1,800 / 45 = 40 words per minute, and 40 x 60 = 2,400 words per hour.
B: This is her rate per minute, not per hour.
C: This treats 45 minutes as 0.45 hour; 45 minutes is 0.75 hour.
D: This multiplies the words by the minutes instead of dividing to find a rate.
Practice 28 of 35 · medium
A three-day hike covers 47 miles in all. The hikers walk 14.5 miles on the first day and 17.25 miles on the second day. How many miles do they walk on the third day?
Show the answer
Answer: B
Correct answer: 15.25 miles. The total is known, so the third day is a missing part:
14.5+17.25+x=47
Combine:
31.75+x=47
so
x=47−31.75=15.25miles
A: This is the total for the first two days, an in-between number.
B (correct): The first two days total 31.75 miles, and 47 - 31.75 = 15.25 miles.
C: This adds all three numbers, but 47 is already the total.
D: This subtracts only the first day's distance from the total.
Practice 29 of 35 · medium
A 250-foot roll of cable is cut into pieces that are each 6 feet 3 inches long. How many full pieces can be cut?
Show the answer
Answer: D
Correct answer: 40 pieces. Convert to one unit: 3 inches is
123=0.25foot
so each piece is 6.25 feet.
Pieces:
250÷6.25=40
A: This treats 6 feet 3 inches as 6.3 feet instead of 6.25 feet.
B: This ignores the 3 inches and divides by 6 feet.
C: This adds 6 and 3 as if both were feet, dividing by 9.
D (correct): 6 feet 3 inches is 6.25 feet, and 250 / 6.25 = 40 pieces.
Practice 30 of 35 · medium
A construction crew of 40 workers grows by 15 percent for a summer project. How many workers are on the crew now?
Show the answer
Answer: A
Correct answer: 46 workers. Convert 15 percent to 0.15. The increase is
0.15×40=6
workers.
New size:
40+6=46
or
1.15×40=46
A (correct): The increase is 0.15 x 40 = 6 workers, so the crew has 40 + 6 = 46.
B: This is the number of workers added, not the new crew size.
C: This adds 15 workers instead of 15 percent of 40.
D: This decreases the crew by 15 percent, but the crew grew.
Practice 31 of 35 · hard
Marcus's age is 4 years less than twice his sister's age. The sum of their ages is 41. How old is Marcus?
Show the answer
Answer: D
Correct answer: 26. Let the sister's age be s. Marcus is 2s−4, and the sum is
s+(2s−4)=41
So
3s=45
and
s=15
Marcus:
2×15−4=26
Check:
15+26=41
A: This is the sister's age, an in-between value rather than Marcus's age.
B: This doubles the sister's age but forgets the "4 years less."
C: This simply subtracts 4 from the sum of their ages.
D (correct): With sister = s, Marcus = 2s - 4, so s + 2s - 4 = 41 gives s = 15 and Marcus = 26.
Practice 32 of 35 · easy
A bedroom floor is a rectangle 12 feet by 15 feet. How many square feet of carpet are needed to cover the floor?
Show the answer
Answer: A
Correct answer: 180 square feet. Carpet covers a surface, so find area:
A=l×w=12×15=180square feet
A (correct): Carpet covers a surface, so use area: 12 x 15 = 180 square feet.
B: This is the perimeter, 2(12 + 15) = 54 feet, which measures the border, not the surface.
C: This adds the length and width instead of multiplying them.
D: This takes half of the area, as if the floor were a triangle.
Practice 33 of 35 · medium
Warehouse A ships 140 parcels per hour for 6 hours. Warehouse B ships 95 parcels per hour for 8 hours. How many more parcels does Warehouse A ship than Warehouse B?
Show the answer
Answer: D
Correct answer: 80 parcels. Rate times time gives each total: A ships
140×6=840
and B ships
95×8=760
"How many more" asks for a difference:
840−760=80
parcels.
A: This compares only the hourly rates, ignoring that the warehouses work different numbers of hours.
B: This adds the two totals, but "how many more" asks for a difference.
C: This multiplies the rate difference of 45 by 8 hours, as if both worked the same time.
D (correct): A ships 140 x 6 = 840 and B ships 95 x 8 = 760, so A ships 840 - 760 = 80 more.
Practice 34 of 35 · hard
A lawn sprayer applies 3 quarts of fertilizer for every 1,000 square feet. A rectangular lawn measures 80 feet by 50 feet. How many gallons of fertilizer are needed? (4 quarts = 1 gallon)
Show the answer
Answer: A
Correct answer: 3 gallons. Area:
80×50=4,000square feet
which is 4 sections of 1,000 square feet.
Fertilizer:
4×3=12quarts
Convert:
12÷4=3gallons
A (correct): The lawn is 4,000 square feet, which needs 4 x 3 = 12 quarts, and 12 / 4 = 3 gallons.
B: This is the amount in quarts; the units were never converted to gallons.
C: This multiplies 12 quarts by 4 instead of dividing when changing to the larger unit.
D: This converts 3 quarts for a single 1,000-square-foot section and ignores the lawn's size.
Practice 35 of 35 · medium
On a trail map, 2 inches represents 15 miles. Two campsites are 9 inches apart on the map. What is the actual distance between them?
Show the answer
Answer: D
Correct answer: 67.5 miles. Keep inches on top in both ratios:
152=x9
Cross-multiply:
2x=135
so
x=67.5miles
Each inch stands for 7.5 miles, and
9×7.5=67.5
A: This multiplies 9 by 15 as if 1 inch, not 2 inches, stood for 15 miles.
B: This flips one ratio, putting miles on top in one fraction and inches on top in the other.
C: This adds 9 and 15, but a map scale is a ratio that calls for multiplying.
D (correct): Setting 2/15 = 9/x gives 2x = 135, so x = 67.5 miles.
About this test
Each answer includes an explanation that shows the translation from words to an equation, not just the final number, so you can see exactly where a setup went off track. If you want more repetition, 35 additional practice questions for this lesson are available beyond the test itself.
Use your misses to decide what to review. Errors on percentage or ratio items point to Rates, Ratios, Percentages and Proportions as Relationships and Worked Examples 3 and 4. Trouble with multi-step items suggests rereading Multi-Step Relationships. If you picked answers built from irrelevant numbers, revisit Relevant vs. Irrelevant Information and practice the Six-Step AR Translation Routine before retaking the test.
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