An airplane takes 2 hours to fly 579.24km with the wind and 5 hours 36 minutes for the return flight against the wind. What is the speed of the airplane and that of the wind?
TO : 579.24/2 = 289.62 km/hr
RETURN 579.24/5.6=103.43 km/hr
7.6 hours roundtrip of 1158.48 km
Average = 152.43 km/ hr = plane speed
152.43 - 103.43 = wind speed = 48.99=~~49 km/hr