A boy walks to school at a speed of 2 mph. It takes him fifteen minutes to get to school. How far away does he live?
I know I have to change the 15 minutes to hours but would I use 0.15 hours or 0.25 hours (a quarter of an hour)
You use this: .25 hour, or a of an hour
.15 = = 9 minutes
.25 = = 15 minutes