rate of plane and rate of wind

Question

Flying against the wind, a jet travels 1980

 miles in 3

 hours. Flying with the wind, the same jet travels 10,440

 miles in 9

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

Answer 1

Step 1: Divide the distance the jet travels in still air by the time it takes to travel that distance.

1,980 miles / 3 hours = 660 miles per hour (Rate jet travels in still air)

Step 2: Divide the distance the jet travels in the wind by the time it takes to travel that distance.

10,440 miles / 9 hours = 1,160 miles per hour (Rate jet travels in wind)