will cycles at a speed of 15 miles per hour

Question

Will cycles 15 miles per hour he cycles 12 miles from home to school. .if he increases his cycling speed by 5 miles per hour how much faster would he reach school 

Answer 1

How long does the journey take at 15mi/hr?

 

12mi/(15mi/hr) = 12/15 hr = 3/5 hr = 0.6 hr = 0.6X60 min

    = 36 min

 

You can do a similar calculation to find how long it takes to make the journey at the faster speed, and then subtract the speed from the above to find how much faster it is.