Question 1044619
36 minutes is  {{{36/60=9/15=(3/5)hour}}}.


20 minutes is  {{{(1/3)hour}}}.


Travel Rates Rule to relate rate, time, distance, is RT=D.

<pre>
            SPEED       TIME       DISTANCE

CAR          r          {{{3/5}}}        d

TRAIN      r+48         {{{1/3}}}        d
</pre>


{{{r(3/5)=(1/3)(r+48)}}}, solve this for r, and use it to find d.