Question

problem on unit rates associated with ratios of whole...Answer each part. If necessary, round your answers to the nearest hundredth.(a) Hong bought 7 pounds of rice for $4.How many pounds of rice did he get per dollar?pounds per dollar(b) Keiko runs 6 miles in 42 minutes.How many miles does she run per minute?miles per minute

Answer 1

A. How many pounds of rice per dollar.

The given rate for pound of rice per dollar is

7 pounds per 4 dollar.

Divide the rate by 4

7÷4 pounds per 4÷4 dollar

1.75 pounds per 1 dollar

The rate therefore is 1.75 pounds per dollar.

B. How many miles per minute.

The given rate is 6 miles per 42 minutes.

Divide it by 42.

6 miles per 42 minutes

6÷42 miles per 42÷42 minutes

0.14 miles per 1 minute

The rate therefore is 0.14 miles per minute.