NC.7.RP.2b Exam Prep 2

A runner completes a 10-kilometer race in ⁵/₆ of an hour. What is the runner's average speed in kilometers per hour?

• ¹/₅ kilometers per hour

• ¹/₂ kilometers per hour

• 12 kilometers per hour

• 10 kilometers per hour

Tags

NC.7.RP.2b

A faucet is dripping, and the graph shows the total volume of water lost over time. Which is closest to the amount of water lost per minute?

• 1 mL

• 2 mL

• 3 mL

• 5 mL

Tags

NC.7.RP.2b

A restaurant purchased 12 cases of soda for $192. A different restaurant bought the same soda and paid $256 for 16 cases. What is the unit price, in dollars per case, of the soda?

(a)  

Tags

NC.7.RP.2b

A dripping faucet loses water at a constant rate. The total amount of water lost is shown by the graph. How many milliliters of water did the faucet lose each hour?

• 6 mL per hour

• 8 mL per hour

• 10 ¹/₂ mL per hour

• 12 mL per hour

Tags

NC.7.RP.2b

A team of volunteers is planting trees. The number of watering cans needed depends on the total number of trees planted in two different sections of the park. If 8 watering cans were used for 32 trees in the north section and 40 trees in the south section, what is the rate of trees per watering can?

• A. 8

• B. 9

• C. 10

• D. 12

Tags

NC.7.RP.2b

A store sells fabric by the yard. The price of the fabric is proportional to the length purchased. The table shows the cost for different lengths. What is the constant of proportionality of cost to length? Record the answer as a decimal number to the nearest tenth.

Mathematical Equivalence

ON

Tags

NC.7.RP.2b

A baker is frosting cupcakes. She frosts an average of 36 cupcakes in 9 minutes. Which of these describes her frosting rate?

• 4 minutes per cupcake

• 4 cupcakes per minute

• 36 minutes per cupcake

• 36 cupcakes per minute

Tags

NC.7.RP.2b

The graph shows the number of products assembled by a factory worker over time. What is the worker's assembly rate?

• 2 products per minute

• 3 products per minute

• 4 products per minute

• 5 products per minute

Tags

NC.7.RP.2b

A 10-gallon container of spring water costs $12.50, and a 25-gallon container costs $30.00. Which statement is true and can be used to determine the better buy?

• The unit rate per gallon of the 10-gallon container is $0.05 less than that of the 25-gallon container.

• The unit rate per gallon of the 10-gallon container is $0.05 more than that of the 25-gallon container.

• The unit rate per gallon of the 10-gallon container is $0.25 less than that of the 25-gallon container.

• The unit rate per gallon of the 10-gallon container is $0.25 more than that of the 25-gallon container.

Tags

NC.7.RP.2b

A farmer recorded the number of fruit trees and the amount of fruit harvested in the table. How many kilograms of fruit can be harvested from one tree?

Mathematical Equivalence

ON

Tags

NC.7.RP.2b