Question 1154312
<pre>
             SPEED              TIME              DISTANCE

R to M        220-w            225/(220-w)          225

M to R        220+w            225/(220+w)          225

TOTAL                            5&(3/60)           550
</pre>

Total Time Equation:
{{{highlight_green(225/(220-w)+225/(220+w)=5&1/20)}}}