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Against the wind a commercial airline in South America flew 504 miles in 3.5 hours. With a tailwind the return trip took 3 hours. What

Against the wind a commercial airline in South America flew 504 miles in 3.5 hours. With a tailwind the return trip took 3 hours. What was the speed of the plane in still air? What was the speed of wind?

speed of plane in still air =

speed of wind =

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