Question 1195317
<pre>
goingto                6          d/6             d

returning              4          d/4             d

total                             5
</pre>


{{{d/6+d/4=5}}}

{{{4d+6d=120}}}

{{{10d=120}}}

{{{d=12}}}

Going at 6mph, {{{12/6=2}}} hours
Returning at 4mph, {{{12/4=3}}} hours


----------------------earlier try----------------------
<pre>
            SPEEDS            TIME          DISTANCES

GOING          6

RETURN         4
                      
TOTAL                           5
</pre>


<pre>
            SPEEDS            TIME          DISTANCES
GOING          6               x              6x
RETURN         4             (5-x)           4(5-x)
                                    
TOTAL                           5
</pre>
{{{highlight_green(6x=4(5-x))}}}
.
.
{{{highlight(x=2)}}}