SOLUTION: A plane flies 435 miles with the wind and 375 miles against the wind in the same length of time. If the speed of the wind is 10mph, find the speed of the plane in still air.
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Question 628245: A plane flies 435 miles with the wind and 375 miles against the wind in the same length of time. If the speed of the wind is 10mph, find the speed of the plane in still air. Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! r*t=d
t=d/r
435/(r+10)=375/(r-10)
435(r-10)=375(r+10)
435r-4350=375r+3750
60r=4350+3750
60r=8100
r=135
