SOLUTION: With a tail wind, a plane took 3 hours to travel 1440 km. On the return trip against the same windm, the trip took an extra hour. Find the speed of the plane in still air?

Question 269978: With a tail wind, a plane took 3 hours to travel 1440 km. On the return trip against the same windm, the trip took an extra hour. Find the speed of the plane in still air?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
With a tail wind, a plane took 3 hours to travel 1440 km. On the return trip against the same windm, the trip took an extra hour. Find the speed of the plane in still air?
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Speed downwind = 1440/3 = 480 km/hr
Speed upwind = 1440/4 = 360 km/hr
The airspeed is the average, 420 km/hr

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