Question 1045720
{{{system(d=180,t=2,b=1&12/60,w=unknownWindSpeed,r=unknownPlaneSpeedWithoutWind)}}}

<pre>
               SPEED     TIME       DISTANCE
GOING          r-w        t           d
RETURN         r+w        b           d
</pre>


Basic Travel RATES rule is RT=D to relate constant rate, time, distance.


{{{system((r-w)t=d,(r+w)b=d)}}}


Solve the system for r and w.  Substitute the given values into the formulas  to evaluate the values for r and w.