rate of the jet in still air and what is the rate of the wind?

Question

A jet travels 2184 miles against the wind in 3 hours and 2424 miles with the wind in the same amount of time. What is the rate of the jet in still air and what is the rate of the wind?

Answer 1

wind speed = 40 mph

plane in still air speed = 768

(768+40)3 = 2424

(768-40)3 = 2184

speed times time = distance

d=st

2424 = (s+40)3

2184 = (s-40)3

2 equations, 2 unknown

solve by substitution or elimination