Question

It took Leo 3.5 hours to complete a route walking at a rate of 4.2 mph. How long would it take Leo to complete the same route walking at a rate of 2.8 mph?

Answer 1

Answer: Hence, Leo need 5.25 hours to complete the dame route walking at a rate of 2.8 mph.

Explanation :

Time taken to complete a route = 3.5 hours

Speed of walking = 4.2 mph

Distance is given by

$Distance=Speed\times time\\\\Distance=4.2\times 3.5\\\\Distance=14.7m$

Now, if he change his speed

New speed = 2.8 mph

Time taken to complete a route now is given by

$Time=\frac{Distance}{Speed}\\\\Time=\frac{14.7}{2.8}\\\\Time=5.25\text{ hours}$

Hence, Leo need 5.25 hours to complete the dame route walking at a rate of 2.8 mph.