SOLUTION: Flying with a tailwind, a plane flew 4200 km in 6 hours. With a headwind, the plane took 7 hours to make the return flight. Find the plane's air speed and the wind speed.

Question 1092063: Flying with a tailwind, a plane flew 4200 km in 6 hours. With a headwind, the plane took 7 hours to make the return flight. Find the plane's air speed and the wind speed.
Found 2 solutions by Boreal, Alan3354:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
4200/6=700 km per hour with tailwind
4200/7=600 km per hour with headwind
s+w=700, where s is speed of plane in still air and w is the wind speed
s-w=600
2s=1300
s=650 km/hr
w=50 km.hr
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Airspeed is the average of the 2 groundspeeds.
Windspeed is the difference between airspeed and groundspeed.
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airplanes use knots, not km/hr

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