Speed going upstream and downstream a river

Question

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. What is the plane's speed in still air, and how fast is the wind blowing?

Thank you!!

Answer 1

180 = 2(p - w)

180 = 1(p + w)

Can you expand and solve for either p or w and answer?