SOLUTION: A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 23 mph, what is the speed of the plane in still air?

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Question 41737: A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 23 mph, what is the speed of the plane in still air?
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be the speed of the plane.
EQUATION:
450(23-x)=350(23+x)
Solve from there.
Paul.