When a plane fl ies with the wind, it can travel 2160
Chapter 7, Problem 11(choose chapter or problem)
When a plane fl ies with the wind, it can travel 2160 miles in 3 hours. When the plane fl ies in the opposite direction, against the wind, it takes 4 hours to fl y the same distance. Find the average velocity of the plane in still air and the average velocity of the wind.
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