Find the average seed of the marathoner in km/hou

Question

An Olympic marathoner passes the 3 km point of a race after 12 minutes and reaches the 29 km point after 2.3 hours. Find the average seed of the marathoner in km/hours

Answer 1

Average speed is found by dividing total distance by total time.

(29 km)/(2.3 hr)

 

If you only want the average speed between the two points given, then subtract the first from the second, then divide. You'll need to convert the 12 minutes into hours.

(29-3 km)/(2.3 hr - 12/60 hr)