Question 181113
a man jogged to his friend's house at a rate of 6 mph. the trip took 20 minutes.
 how long will it take him to return home if he can maintain a rate of 8 mph?
:
Let t = time required in min to return home
:
We don't have to convert to mph here
6*20 = 8t
120 = 8t
t = 120/8
t = 15 min to return
:
Find the dist in mi by using hrs to check it:
6mph * {{{1/3}}}hr = 2 mi
8mph * {{{1/4}}}hr = 2 mi