Question 1008203
<pre>
              rate      time     distance
AtoB          72        ()        d
BtoA          48        ()        d
Total                   5


<pre>
              rate      time     distance
AtoB          72        {{{d/72}}}        d
BtoA          48        {{{d/48}}}        d
Total                   5
</pre>
{{{highlight_green(d/72+d/48=5)}}}