Question 1115316
<pre>
                 SPEED        TIME      DISTANCE
GOING              r           0.5        d
RETURN             v           0.75       d
</pre>


{{{highlight(0.5r=0.75v)}}}


-

{{{system(1/2=d/r,(3/4)=d/v)}}}

{{{highlight(3d/v=2d/v)}}}

OR

{{{highlight(3/r=2/v)}}}