A man flies a small airplane from Fargo to Bismarck, North Dakota... a distance of \( 180 \) miles. Because he is flying into a head wind, the trip takes him \( 2 \) hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only \( 1 \) hour and \( 48 \) minutes. What is the plane's speed in still air, and how fast is the wind blowing?
his plane speed equals \(\square mph .\)
the wind speed equals \(\square mph .\)