Question 1067866
Constant Travel Rates Rule, RT=D for RATE, TIME, DISTANCE
<pre>
                    SPEED      TIME      DISTANCE
GOING                 r          6          d
RETURNING            r+22        4          d
</pre>


System of Equations  {{{system((r)(6)=d,(r+22)(4)=d)}}}


Same d both directions;
{{{6r=4(r+22)}}}


Solve for r, the speed GOING TO the mountains.