Question

if 4 minutes you did 1 lap, how many laps can you do in 72 minutes?

Answer 1

Ley y be the number of lap you can do in 72 minutes

4 minutes = 1 lap

72 minutes = y

cross multiply

4y = 72

Divide 4 by bothside

4y/4 = 72/4

y = 18

You can go 18 laps in 72 minutes