SOLUTION: a plane flies 450 miles with the wind and 300 miles against the wind in the same length of time. if the speed of the wind is 20 mph, what is the speed of the plane in the air?

Question 318904: a plane flies 450 miles with the wind and 300 miles against the wind in the same length of time. if the speed of the wind is 20 mph, what is the speed of the plane in the air?

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let P be the plane speed.
1.
2.
From eq. 1,

Substitute in eq. 2,

mph
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