Chicago Travel Site

Traveling against the wind, a plane flies 2100 miles from Chicago to San Diego in 4 hours and 40 minutes. The return trip, traveling with a wind that is twice as fast, takes 4 hours. Find the rate of the plane in still air.

Ok I got this
x+y=4 hours and 40 mintues (line 1)
2x-2y=4 hours(line 2) B/c it took twice as fast
Where does the 2100 miles come in at?

Or did I mess up?

what is the best way for me to travel from chicago to Ludington… like train or bus. i don’t have a car