An airplane flying into a headwind travels 2600 miles in 6 hours and 15 minutes. On the return flight, the same distance is traveled

An airplane flying into a headwind travels 2600 miles in 6 hours and 15 minutes. On the return flight, the same distance is traveled in 4 hours. Find the speed of the plane in still air and the speed of the wind, assuming that both remain constant throughout the round trip