SOLUTION: An airplane flew 3 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air.

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Question 330798: An airplane flew 3 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air.

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
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.
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Let P be the plane speed.
%28P-40%293=D<--- Head wind
%28P%2B40%292=D<--- Tail wind
Since they both equal D, set them equal to each other.
3P-120=2P%2B80
P=200mph