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Free Practice Quiz Question List

3 Ratios and Proportions Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Ratios and Proportions, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: The ratio of 8 apples to 12 oranges represents the same comparison as the ratio of 12 oranges to 8 apples.

  1. A

    True

  2. B

    False

02
Choose one
1 point

Simplify the ratio 18:2418:24 to its lowest terms.

  1. A

    3:43:4

  2. B

    4:34:3

  3. C

    6:86:8

  4. D

    9:129:12

03
True or false
1 point

True or false: Multiplying both terms of a ratio by the same nonzero number produces an equivalent ratio.

  1. A

    True

  2. B

    False

04
Fill in the blank
1 point

A ribbon is 1.21.2 m long and another is 4040 cm long. After converting both lengths to centimeters and simplifying, the ratio of the first length to the second is .

05
Choose one
1 point

Which equation is a proportion?

  1. A

    23=812\frac{2}{3}=\frac{8}{12}

  2. B

    23=810\frac{2}{3}=\frac{8}{10}

  3. C

    23=68\frac{2}{3}=\frac{6}{8}

  4. D

    23=49\frac{2}{3}=\frac{4}{9}

06
Written response
1 point

A car travels 150 miles in 3 hours. What is its average speed in miles per hour? Enter the numerical value only.

07
Choose all
1 point

Select all ratios equivalent to 4:74:7.

  1. A

    8:148:14

  2. B

    12:2112:21

  3. C

    8:128:12

  4. D

    16:2116:21

08
Fill in the blank
1 point

Complete the equivalent ratio. If 4:7=20:x4:7=20:x, then x=x=.

09
Written response
1 point

A 20-ounce package costs $4\$4. What is its unit price in dollars per ounce? Enter the numerical value only.

10
Choose one
1 point

One trip covers 126 miles in 3 hours. A second trip covers 160 miles in 4 hours. Which trip has the greater average speed?

  1. A

    The 126-mile trip in 3 hours has the greater average speed.

  2. B

    The 160-mile trip in 4 hours has the greater average speed.

  3. C

    Both trips have the same average speed.

  4. D

    There is not enough information to compare the speeds.

11
Choose all
1 point

A recipe uses 4 cups of flour for 10 servings. Select all statements that are correct when scaling the recipe to 25 servings.

  1. A

    The recipe uses 0.40.4 cup of flour per serving.

  2. B

    The recipe needs 10 cups of flour for 25 servings.

  3. C

    The recipe needs 9 cups of flour for 25 servings.

  4. D

    The recipe uses 2.52.5 cups of flour per serving.

12
Choose one
1 point

A bag contains 6 red marbles and 4 blue marbles. What is the simplified ratio of blue marbles to all marbles?

  1. A

    2:52:5

  2. B

    3:23:2

  3. C

    2:32:3

  4. D

    5:25:2

13
Choose one
1 point

Which equation results from cross-multiplying 38=x24\frac{3}{8}=\frac{x}{24}?

  1. A

    3(24)=8x3(24)=8x

  2. B

    3(8)=24x3(8)=24x

  3. C

    3x=8(24)3x=8(24)

  4. D

    3(24)=x3(24)=x

14
Open ended
1 point

A paint mixture uses blue and white paint in the ratio 2:32:3. How many liters of each color are needed to make 25 liters of mixture? Explain how the ratio determines your amounts.

15
Choose one
1 point

A basket contains 8 apples and 12 oranges. What is the ratio of oranges to apples?

  1. A

    8:12

  2. B

    12:8

  3. C

    8:20

  4. D

    12:20

16
Choose one
1 point

A bowl contains 6 apples and 4 oranges. What is the simplified ratio of apples to all the fruit?

  1. A

    3:2

  2. B

    2:5

  3. C

    3:5

  4. D

    5:3

17
Choose one
1 point

Simplify the ratio 1 m:50 cm1\text{ m}:50\text{ cm}.

  1. A

    2:1

  2. B

    1:2

  3. C

    1:50

  4. D

    100:1

18
True or false
1 point

True or false: A ratio can compare one part of a group with the whole group.

  1. A

    True

  2. B

    False

19
Written response
1 point

A car travels 180 miles in 3 hours. What is its average speed in miles per hour?

20
Written response
1 point

A recipe uses 4 cups of flour for 10 servings. At the same rate, how many cups of flour are needed for 25 servings?