SOLUTION: An airplane flies 490 miles with the wind and 340 against the wind in the same length of time. If the speed of the wind is 30, what is the speed of the airplane in still air?
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Question 394204: An airplane flies 490 miles with the wind and 340 against the wind in the same length of time. If the speed of the wind is 30, what is the speed of the airplane in still air?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The airspeed of the plane is the average (490 + 340)/2 = 415 mph
The windspeed is the difference = 75 mph, not 30.
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