Question 1110879
<pre>
                 SPEED        TIME          DISTANCE
GOING            r            165/r          165
RETURN           r-22         165/(r-22)     165
DIFFERENCE                      2
</pre>


The main unknown quantity is the speed GOING TO the destination, r.

{{{165/(r-22)-165/r=2}}}
Solve this for r, and evaluate the other rate and both times.