Audrey rode her bike to school at a rate of 12mi/hr. She rode back at a rate of 8mi/hr. How far is it to school if the round trip takes 1 hour?

Guest Jun 12, 2018

#1**0 **

Let us have d= the distance from home to school. Then the time at 12mi/hr is 5d because 12/60=1/5. Similarily 8/60=2/15 so it takes 15/2*d. Adding the times gives us 12.5d=60 so d=4.8mi. Thus it takes 4.8mi to school.

Alecdanub Jun 12, 2018