# Chapter 5 Practice Test (5-1 To 5-4)

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Use this practice quiz to help study for Thursday's test. You will need a pencil and some scratch paper.

• 1.

### Represent the ratio 7 : 18  in two other ways

B.
Explanation
The ratio 7:18 can be represented in two other ways as 14:36 and 21:54. This is because the ratio can be multiplied or divided by the same non-zero number to get equivalent ratios. In this case, multiplying 7 and 18 by 2 gives 14 and 36, and multiplying by 3 gives 21 and 54.

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• 2.
B.
• 3.

### Ben sold 39 tickets to the school play and Jared sold 12 tickets.  What is the ratio, in simplest form, of the number of tickets Jared sold to the number of tickets Ben sold?

D.
Explanation
Jared: Ben =Â Â  Remember to simplify

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• 4.

### What is the unit rate for travelling 212 km in 6 hours?

• A.

0.03 km/h

• B.

35.33 km/h

• C.

30.29 km/h

• D.

42.4 km/h

B. 35.33 km/h
Explanation
Remember, you want to get a denominator of 1 for unit rate. 212 km / 6 hours. Divide by 6.

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• 5.

### Use the unit price to find the total price.   You buy 9 gallons of gas at \$1.92 per gallon.

• A.

\$8.64

• B.

\$18.18

• C.

\$17.28

• D.

\$21.33

C. \$17.28
Explanation
Each gallon costs \$1.92. You want 9 of them, so you must multiply 9 x \$1.92.

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• 6.

### You pay \$1.75 for 5 bagels.  What is the unit price?

• A.

\$0.09 per bagel

• B.

\$0.45 per bagel

• C.

\$0.35 per bagel

• D.

\$0.44 per bagel

C. \$0.35 per bagel
Explanation
\$1.75 / 5 bagels

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• 7.

### A store sells packages of pencils.  Which package offers the best unit price?

• A.

12 pencils for \$3.36

• B.

15 pencils for \$4.05

• C.

16 pencils for \$4.16

• D.

13 pencils for \$3.25

D. 13 pencils for \$3.25
Explanation
You must get the unit price for each package. To get the cost per pencil, divide the price by the number of pencils.

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• 8.

### Which of the following ratios form a proportion?

D.
Explanation
Remember to use cross products to determine if it is a proportion.

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• 9.

### A bookstore advertises 5 notebooks for \$7.75. At this rate, how much will 7 notebooks cost?

• A.

\$54.25

• B.

\$8.00

• C.

\$10.85

• D.

\$1.55

C. \$10.85
Explanation
The cost of 5 notebooks is \$7.75, so the cost of 1 notebook is \$7.75/5 = \$1.55. Therefore, the cost of 7 notebooks will be 7 * \$1.55 = \$10.85.

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• 10.

### Leroy can lay 144 bricks in 3 hours.  At this rate, how many bricks can he lay in 7 hours?

• A.

48

• B.

336

• C.

1,008

• D.

250

B. 336
Explanation
Leroy can lay 144 bricks in 3 hours, which means he can lay 48 bricks in 1 hour (144 divided by 3). To find out how many bricks he can lay in 7 hours, we can multiply the number of bricks he can lay in 1 hour (48) by the number of hours (7), which gives us 336 bricks. Therefore, the correct answer is 336.

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• 11.

### Solve the proportion:

• A.

18

• B.

9

• C.

3

• D.

27

A. 18
• 12.
• A.

368

• B.

328

• C.

184

• D.

400

A. 368
• 13.
D.
• 14.
C.
Explanation
Remember to change the mixed numbers into improper fractions. Flip the second fraction and multiply together. Change back into a mixed number when adding, subtracting, multiplying or dividing fractions.

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• 15.

### Which ratio is equal to 100 : 20?

• A.

10 : 2

• B.

80 : 2

• C.

2 : 10

• D.

10 : 14

A. 10 : 2
Explanation
The ratio 10:2 is equal to 100:20 because both ratios can be simplified to 5:1. This means that for every 5 units in the first term of the ratio, there is 1 unit in the second term. So, if there are 100 units in the first term, there will be 20 units in the second term, resulting in the ratio 100:20.

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• Mar 13, 2024
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• Dec 16, 2012
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