SOLUTION: If a plane can travel 480mph with the wind and 400mph against the wind, what is the speed of the plane in still air?

Question 310049: If a plane can travel 480mph with the wind and 400mph against the wind, what is the speed of the plane in still air?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If a plane can travel 480mph with the wind and 400mph against the wind, what is the speed of the plane in still air?
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It's called airspeed, and it's the average of the 2.
Airspeed = (480+400)/2 = 440 mph
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Airplanes use knots for speed, not miles per hour or km per hour.

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