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Two airplanes (not shown to scale) travel the same round-trip distance between two cities (time is given in hours). Both airplanes have the same air speed, but one airplane (the top airplane with the blue wingtip) travels faster or slower relative to the ground because it is subject to a headwind and a tailwind. A positive wind velocity means a tailwind on the outbound part of the trip and a headwind on the inbound part of the trip. What is the ratio of the wind speed to the air speed for the top airplane? Restart.