Let p = the speed of the plane in still air and w = the speed of the wind.

My overall speed with the wind is p + w and against the wind is p - w. If I fly 200 mph and the wind is 5 mph, then with the wind I am travelling at 205 mph but upwind I'm travelling 195 mph.

d = rt

1100 = 11(p + w)

1100 = 22(p - w)

100 = p + w

50 = p - w

Adding the 2 equations together...

2p = 150

**p = 75 mph**

75 - w = 50

**w = 25 mph**

** **