SOLUTION: an airplane flew for 5 hours with a tail wind of 25 km/h.
the return flight against the same wind took 5.5 hours.
find the speed of the airplane in still air.
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Question 184911: an airplane flew for 5 hours with a tail wind of 25 km/h.
the return flight against the same wind took 5.5 hours.
find the speed of the airplane in still air.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
D=RT
THE DISTANCES ARE THE SAME THUS:
RT=RT
(X+25)5=(X-25)5.5
5X+125=5.5X-137.5
5X-5.5X=-137.5-125
-.5X=-262.5
X=-262.5/-.5
X=525 MPH IS THE PLANE SPEED IN STILL AIR.
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