Ratio Rate and Proportion

Which statement best describes what a ratio is.

• A number

• A comparison of two quantities.

• A comparison

• A comparison of many things.

A class has 15 boys and 20 girls. What is the boy:girl ratio in simplest form?

• 4 to 5

• 10 to 13

• 3:4

• 3:5

Do the ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

A ratio equivalent to 3 : 7 is:

• 3 : 9

• 6 : 10

• 9 : 21

• 18 : 49

Which is NOT equivalent to 3:5?

• 15:25

• 9:15

• 21:28

• 30:50

Which represents the relationship of oranges to total fruit?

• 2:6

• 2:4

• 4:6

• 4:2

Patrick has 2 black, 3 red, and 5   white toy cars. What is the ratio of red toy cars to all the toy cars? 

• 3:5

• 1:3

• 3:11

• 3:10

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour

• 15 customers per hour

• 12 customers per hour

• 20 customers per hour

Tell whether the ratios are equal or not.

3:21 and 1:4

• Equal

• Not Equal

It snowed 14 inches in 5 hours. What is the unit rate?

• 3 inches

• 1.5 inches

• 5 inches

• 2.8 inches