Question 720508
flying with the wind a plane went 135 mph. Flying into the same wind the plane only went 93 mph. Find the speed of the wind and the speed of the plane in still air.
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Let p be speed of the plane in still air ;Let w = speed of wind.
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Equation:
P + w = 135 mph
p - w =  93 mph
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Add and solve for "p":
2p = 228
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p = 114 mph (speed of the plane in still air)
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Subtract those same equations and solve for "w":
2w = 42 mph
w  21 mph (speed of the wind.
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Cheers,
Stan H.
Solve for "W":