A bicyclist rode a distance of 4 miles in 24 minutes. What was the average rate of the bicyclist in miles per hour

Question

A bicyclist rode a distance of 4 miles in 24 minutes. What was the average rate of the bicyclist in miles per hour

Answer 1

4:24 as X:60

 

4*60 = 24X

X = 240 / 24 = 10 mph

 

Another way to see it is that he took 6 minutes to go one mile and there are 10 6-minute segments in an hour.

Answer 2

d=4 mi  and t = 24 min =24/60 hr = 0.4 hr

 

So rate =d/t  = 4mi/0.4 hr = 10 mi/hr