If a plane can travel 490 miles per hour with the wind and 290 miles per hour against the wind, find the speed of the wind and the speed of the plane still in air.
Thanks!!
P + w = 490 P= plane speed w = wind speed
P - w = 290 Add BOTH equations together
2P = 780 SOlve for P
p= 780/2 = 390 mph
