A plane flies from Penthaven to Jackson and then back to Penthaven. When there is no wind, the round trip takes hours and minutes, but when there is a wind blowing from Penthaven to Jackson at miles per hour, the trip takes hours and minutes. How many miles is the distance from Penthaven to Jackson?
(Assume that the plane flies at a constant speed, and that the turnaround time is negligible.)
