Question

You have trained all year for a marathon. In your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4.5 hours. What would your average speed have to be to complete the race in 4.5 hours? Give your answer in kilometers per hour.

Answer 1

S=26 miles = 26*1,609344 km
t=4.5 hours
v=S/t =26*1,609344/4,5 km/h = 9,298432 km/h ~ 9,3 km/h