Question

It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long did he travel each way? (Round answer to nearest tenth.)

Answer 1

 Let d = dist traveled one way
Write a time equation;
time = dist/speed
d/20+d/30 = 12

Answer 2

I belive it would be 7 hours going and 5 hours coming back