Question 1017810
Travel rates rule, RT=D to relate rate, time, distacne
<pre>
              rate         time         distance
DOWN          r+c            2            26
UPST          r-c            3             9
</pre>

{{{system((r+c)*2=26,(r-c)*3=9)}}}



{{{system((r+c)=13,(r-c)=3)}}}


{{{system(r+c=13,r-c=3)}}}
Simple Elimination Method will quickly give your answers.