Flying against the wind, an airplane travels 3950 kilometers in 5 hours. Flying with the wind, the same plane travels 3030 kilometers in 3 hours. What is the rate of the plane in still air and what is the rate of the wind?
3950 / 5 =790 km/h - its speed against the wind 3030 / 3 =1,010 km/h - its speed with the wind.
[1,010 + 790] / 2 =900 km/h - its speed in still air. [1,010 - 790] / 2 =110 km/h - The speed of the wind.
