SOLUTION: A plane flies 1200 miles in 4 hours with the wind, but takes 5 hours to make the return trip against the same wind. What is the plane's average speed in still air?
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Question 884607: A plane flies 1200 miles in 4 hours with the wind, but takes 5 hours to make the return trip against the same wind. What is the plane's average speed in still air?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
s + w = 300mph = 1200mi/4hr
s - w = 240mph
2s = 540
s = 270mph
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