Question 1068059
<pre>
               SPEED       TIME       DISTANCE

Yessica         r+36       {{{1/2}}}         {{{(r+36)/2}}}

Zoe             r          {{{1/2}}}         {{{r/2}}}

Total                                  26
</pre>


Solve for r, Yessica's average speed using  {{{(r+36)/2+r/2=26}}}.