SOLUTION: A plane flew 1650 miles in 10 hours with the wind. The return trip took 11 hours, flying against the same wind. What was the speed of the wind?

Question 969403:
A plane flew 1650 miles in 10 hours with the wind. The return trip took 11 hours, flying against the same wind. What was the speed of the wind?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
D=RT
1650=R*10
5-1650/10
R=165 MPH WITH THE WIND
1650=R*11
R=1650/11
R=150 AGAINST THE WIND
(165-150)/2=15/2
7.5 MPH IS THE WIND SPEED.
1650=(R+7.5)10
1650=10R+75
R=1650-75
10R=1575
R=1575/10
R=157.5 MPH FOR THR PLAN IN STILL AIR
PROOF:
1650=(157.5-7.5)11
1650=150*11
1650=1650

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