Question

an airplane travels 3700 km in 5 hours and 4400 km with the wind in the same amount of time. What is the rate of the plane in still air and what is the rate of the wind?

Answer 1

The rate of the plane in still air is 740km/h
The rate of the wind is 140km/h

Because: 3700 km in 5 hours is the plane in still air. So we need to do 3700÷5 which equals 740. So we knows the plane in still air is 740km/h. To find the rate of wind we know that 4400 km in 5 hours is the plane plus the wind. So we need to subtract the plane itself from the equation. 4400-3700 is 700. 700 is the rate of wind in 5 hours so we need to divide. 700÷5 equals 140, which is our final answer.