SOLUTION: A plane flies 720 mi against a steady 30-mph headwind and then returns to the same point with the wind. If the entire trip takes 10 hours, what is the plane's speed in still air?
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Question 19022: A plane flies 720 mi against a steady 30-mph headwind and then returns to the same point with the wind. If the entire trip takes 10 hours, what is the plane's speed in still air? Answer by MelanieBCC(40) (Show Source):
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