SOLUTION: A jet plane flying with the wind went 1820 mi in 4 h. Against the wind, the plane could only fly 1560 mi in the same amount of time. Find the rate of the plane in calm air and the

Question 903423: A jet plane flying with the wind went 1820 mi in 4 h. Against the wind, the plane could only fly 1560 mi in the same amount of time. Find the rate of the plane in calm air and the rate of the wind.

Found 2 solutions by tmwilliamlin168, ewatrrr:
Answer by tmwilliamlin168(27) (Show Source): You can put this solution on YOUR website!
x=jet speed
y=wind speed
x+y=1820
x-y=1560
y=130
x=1690
rate of plane: 1690 in 4h.
rate of wind: 130 in 4h

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
(r+w) = 455mph = 1820mi/4hr
(r-w) = 390mph = 1560mi/4hr
2r = 845
r = 422.5mph and w = 32.52mph

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