### Home > CC3 > Chapter Ch7 > Lesson 7.2.5 > Problem 7-81

7-81.

Aja and Emilie were riding their skateboards. They knew that they could ride 3 miles in 20 minutes. Homework Help ✎

How far can the girls ride in 45 minutes?

Set up a proportion.

milesIf

represents the distance in miles andrepresents the time in minutes, write an equation to represent the distance traveled for any time.You can also use a proportion for this problem.

Multiply both sides by

to simplify the equation.