Giving 11 points! in desperate need!

dalia flies an ultralight plane with a tailwind to a nearby town in 1/3 of an hour. on the return trip, she travels the same distance in 3/5 of an hour. what is the average rate of speed of the wind and the average rate of speed of the plane? let x be the average airspeed of the plane. let y be the average wind speed. initial trip: 18 = (x + y)1/3 return trip: 18 = (x – y)3/5
what was dalia's mph?
what was the wind speed?