<PRE><B>Question 413828</B>
a man jogged to his friends house at a rate of 6 mph. the trip took 20 minutes.
 how long will it take to return home if he can maintain a rate of 8 mph?
:
Convert 20 min to {{{1/3}}} hr
:
Let t = return home time jogging at 8 mph
:
Write a distance equation, dist = speed * time
:
To dist = return dist
6*{{{1/3}}} = 8t
2 = 8t
t = {{{2/8}}}
t = {{{1/4}}} hr or 15 min</PRE>