Question 1209176
<pre>
           SPEED       TIME      DISTANCE

A to B       4          d/4         d

B to A       6          d/6         d

TOTAL                   0.75
</pre>
{{{d/4+d/6=0.75}}}


{{{d/4+d/6=3/4}}}


{{{12(d/4+d/6)=12*(3/4)}}}

{{{3d+2d=9}}}

{{{5d=9}}}


{{{d=1&4/5}}}


Question asks for the TOTAL, or 2d.
{{{2(9/5)}}}
{{{18/5}}}


{{{highlight(3&3/5)}}}