You can
put this solution on YOUR website!Rate x Time = Distance
Rate with wind = Speed of Plane in calm air + Speed of Wind=

Rate against wind = Speed of Plane in calm air - Speed of Wind=

Distance is the same in both cases.
Time with :

Time against :

Distance with :

Distance against :

Generate your two rate equations (

and

) in terms of P and W and the known quantitites.
Solve for P and W.