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If a plane can travel 490 miles per hour with the wind and 430 miles per hour against the​ wind, find the speed of the wind and the speed of the plane in still air.

 Jan 29, 2020
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[490 + 430] / 2 =460 mph - its speed in still air

[490 - 430] / 2 =30 mph - speed of the wind.

 Jan 29, 2020

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