Question 541113
let x be the speed before the head wind started.

distance traveled = 2x

Total distance = 1380 miles

Distance traveled with head wind = 1380-2x

speed = x-40

2+(1380-2x)/(x-40)= 5

multiply equation by (x-40)

2(x-40)+1380-2x=5(x-40)
2x-80 +1380-2x=5x-200

5x=1500
x= 300 mph