Question 1124533
<pre>
                     SPEED      TIME                   DISTANCE

Road Before Hwy         r       {{{20/r}}}                20

On the Highway        r+40      {{{75/(r+40)}}}           75

TOTAL                            {{{1&14/60}}}
</pre>
Solve the time sum equation for r.
{{{20/r+75/(r+40)=1&14/60}}}