Question

A jogger runs 1 4/5 miles in 1/4 hour and continues jogging at the same rate. What is the jogger’s speed in miles per hour.

Answer 1

Explanation:

well, we have 1 4/5 miles in 1/4 hour, that means we have one quarter of the time unit of the requested speed unit.

so, we need to multiply everything by 4 to get to miles per hour :

(1 4/5) × 4 / 1 hour = (5 + 4)/5 × 4 = 9/5 × 4 = 36/5 =

= 7 1/5 mph = 7.2 mph