Is this right I need some help with this Please Alg1 ?
Tuesday, March 10th, 2009Traveling 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?
