Question 384344
If a plane can travel 480 miles per hour with the wind and 400 miles per hour against the wind, find the speed of the plane in still air?
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Let "p" be speed of plane in still air.
Let "c" be speed of the wind.
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Equations:
p + c = 480 mph
p - c = 400 mph
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Add and solve for "p":
2P = 880
p = 440 mph (speed of the plane in still air)
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Cheers,
Stan H.