6.1-6.5 Quiz Review: Ratios and Proportions

Write the ratio in simplest form of the hours a student spends relaxing or doing homework to the number of hours sleeping.

• 5 : 24

• 5 : 9

• 24 : 5

• 9 : 5

Write the ratio in simplest form of the hours a student is at football practice to the hours in a day.

• 2 : 24

• 2 : 22

• 1 : 12

• 1 : 11

Write a ratio in simplest form of the hours a student is at school to the hours a student is relaxing or doing homework at home or sleeping.

• 1 : 2

• 7 : 5

• 7 : 9

• 7 : 24

A car travels at a rate of 132 feet per second. What is the equivalent rate in miles per hour?

• 475,200 mph

• 0.025 mph

• 90 mph

• 1.5 mph

Find the unit rate:

 $\frac{\text{13.92}}{8\ gallons}$  

•  $\frac{3.48}{4\ gallons}$  

•  $\frac{6.96}{6\ gallons}$  

•  $\frac{2.32}{2\ gallons}$  

•  $\frac{1.74}{1\ gallon}$  

Solve the proportion: $\frac{4}{9}=\frac{12}{x}$  

• x = 3

• x = 27

• x = 12

Solve the proportion: $\frac{8}{x+5}=\frac{14}{3}$  

• x =  $\frac{47}{7}$  

• x =  $-\frac{23}{7}$  

• x =  $\frac{19}{4}$  

• x =  $\frac{29}{14}$  

Solve the proportion:

 $\frac{6}{x-3}=\frac{12}{5}$  

• x =  $-\frac{1}{2}$  

• x =  $\frac{9}{4}$  

• x =  $\frac{11}{4}$  

• x =  $\frac{11}{2}$  

Solve the proportion:

 $\frac{5}{6}=\frac{5x+9}{15}$  

•  $\frac{7}{10}$  

•  $\frac{43}{10}$  

•  $\frac{42}{15}$  

•  $\frac{11}{5}$  

Solve the proportion: $\frac{2x-3}{x}=\frac{7}{10}$  

• x =  $-\frac{1}{9}$  

• x =  $\frac{3}{13}$  

• x =  $-\frac{10}{9}$  

• x =  $\frac{30}{13}$