Problem Solving with Unit Rates

Jane ran a total of 8 miles over the course of 4 track practices. How many track practices would it take for Jane to run 20 miles? Solve using unit rates.

• 10 practices

• 2 practices

• 12 practices

• 20 practices

Frank wrote a total of 6 pages over 2 hours. After spending 6 hours writing this week, how many pages will Frank have written in total? Solve using unit rates.

• 18 pages

• 12 pages

• 6 pages

• 3 pages

Christine knit a total of 10 centimeters of scarf over 2 nights. How many nights will Christine have to spend knitting in order to knit a total of 15 centimeters of scarf? Solve using unit rates.

• 3 nights

• 4 nights

• 5 nights

• 6 nights

Vicky spent 12 minutes on the phone while routing 4 phone calls. In all, how many phone calls does Vicky have to route to spend a total of 15 minutes on the phone? Solve using unit rates.

• 5 calls

• 3 calls

• 4 calls

• 6 calls

• 3 miles/hour

• 6 miles/hour

• 9 miles/hour

• 12 miles/hour

Wendy pays $5.20 for 1.2 pounds of grapes. At the same rate, how much will she pay for 6 pounds?

Mathematical Equivalence

ON

150 grams of fertilizer is required for a land area of 6 square acres.  At this rate, how many grams of fertilizer is needed for 13 square acres?

• 25 grams

• 300 grams

• 325 grams

• 310 grams

• $4.19

• $29.33

• $67.04

• 4117.32

• 5 miles/hour

• 10 miles/hour

• 15 miles/hour

• 20 miles/hour

Caleb drives 180 miles in 3 hours. At this rate, how many miles will he drive in 12 hours? (a)  

• 720 miles

• 540 miles

• 60 miles