The boston marathon is 26.2 miles long what was the averge speed of the record winner of the wheelchair divsion

Question

The record for the boston marathons wheelchair division is 1 hour 18 minutes and 27 seconds

Answer 1

27 seconds = 27/60 minutes = 9/20 min = .45 min

 

18 min 27 secs = 18.45 min = 18.45/60 hr = .3075 hr

 

1 hour 18 minutes 27 seconds = 1.3075 hours

 

26.2 miles / 1.3075 hr = 20.03824 mph