Solve the problem.
-A twin-engined aircraft can fly 684 miles from city A to city B in 3 hours with the wind and make the return trip in 6 hours against the wind. What is the speed of the wind?
A) 38 mph
B) 95 mph
C) 76 mph
D) 57 mph

Question

Quizplus · Accepted Answer

The speed of the plane in still air is 684 miles / 4.5 hours = 152 mph. With the wind, the speed is 684 miles / 3 hours = 228 mph. Against the wind, the speed is 684 miles / 6 hours = 114 mph. The wind speed is (228 - 114) / 2 = 57 mph.

Solve the Problem. -A Twin-Engined Aircraft Can Fly 684 Miles from City a from City