Unit Rates, Constant of Proportionality, Solving Proportions

Solve the proportion:

• c = 4

• c = 8

• c = 14

• c = 10

Solve for x 

• x = 6
• x = 25
• x = 28
• x = 17

Solve for x 

• x = 15
• x = 11
• x = 1/11
• x = 20

A store has 120 customers in 6 hours. What is the unit rate in customers per hour?

• 16 customers per hour

• 12 customers per hour

• 20 customers per hour

• 15 customers per hour

Maria walks 12 miles in 3 hours. What is the constant of proportionality (miles per hour)?

• 36

• 4

• 0.25

• 32

A skydiver falls 144 feet in three seconds. How far does the skydiver fall per second? Find the unit rate.

• 43

• 48

• 48 feet per second

• 144 feet per second

You score 84 points in six games. How much do you score per game?

• 14

• 13

• 12

• 11

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What is the unit rate?

• $4.95 per pizza

• $5.75 per pizza

• $6.50 per pizza

• $7.25 per pizza

A store has 120 customers in 6 hours. What is the constant of proportionality (customers per hour)?

• 16

• 12

• 20

• 15

Maria walks 12 miles in 3 hours. What is the unit rate in miles per hour?

• 36 miles per hour

• 4 miles per hour

• 0.25 hours per mile

• 32 miles per hour