Question

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Flying against the wind, an airplane travels 3200 kilometers in 5 hours. Flying with the wind, the same plane travels 6300 kilometers in 7 hours. What is the rate of the plane in still air and what is the rate of the wind?

Answer 1

the rate of the first one would be 3200/5 which equals to 640 kilometer per hour and the second one would be 6300/7 which equals to 900 kilometers per hour