Question

It takes Ernesto 3 minutes to jog a lap around the school track. How many laps can Ernesto complete in 15 minutes?

Answer 1

5 laps

Explanation:

We can use ratios to solve

3 minutes 15 minutes

----------------- = ------------------------

1 lap x laps

Using cross products

3x = 15

Divide each side by 3

3x/3 = 15/3

x = 5

He can do 5 laps