SOLUTION: flying with the wind, a small plane flew 660 mi in 3 h. Against thw wind, the plane flew 320 mi in 2 h. Find the rate of the plane in calm air.

SOLUTION: flying with the wind, a small plane flew 660 mi in 3 h. Against thw wind, the plane flew 320 mi in 2 h. Find the rate of the plane in calm air.

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Question 242719: flying with the wind, a small plane flew 660 mi in 3 h. Against thw wind, the plane flew 320 mi in 2 h. Find the rate of the plane in calm air.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
660/3=220 mph.
320/2=160 mph.
(220-160)/2=60/2=30 mph is the speed of the wind.
Proof:
220-30=190 speed of the plane in still air.
160+30=190 ditto.
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