Question 1057141
Your description is not written the way you mean.


"At this speed", the two directions either had no wind; or the direction of the wind switched between the two trip parts.  Drop the phrase and your description is good enough.


<pre>
              SPEED       TIME       DISTANCE
WITHWIND      r+w          t          p

AGAINSTW      r-w          t          d
</pre>


Unknown variables are w and t.  The question asks for w.


{{{p/(r+w)=d/(r-w)}}}