Answer the Following:

Question

When small airplane flies with the wind, it can travel 450 miles per 3 hours. When the same airplane flies in the opposite direction against the wind, it takes 5 hours to cover the same distance. Find the average speed of the wind.

Answer 1

450 = 3 * (r+s) ----> r+s = 150

450 = 5 * (r-s) ----> r-s = 90

adding them together: 2r = 240

r = 120

which forces s = 30

The speed of the plane is 120

the speed of the wind is 30