Question

A father walks 36 miles in 12 hours, while his son covers the same distance on a bicycle at twice the father's rate of speed. At this rate; how many miles would the bicycle rider travel in 9 hours?

Make a Selection:
A. 52.5 miles
B. 49.5 miles
C. 54 miles
D. 48 miles

Answer 1

C. 54 miles

Explanation:

The father walks 36 miles in 12 hours meaning that he walks 3 miles in one hour or 3 mph.

If the son goes twice as fast as the father then he is going at a rate of 6 mph.

So in 9 hours the son will have gone 9 hours x 6 mph = 54 miles