Answer :
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
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