SOLUTION: An airliner flies against the wind on one leg of its round trip in 7.5 hours. It flies back to its starting point, with the wind in 7 hours. If the average speed of the wind is 15
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Question 1197865: An airliner flies against the wind on one leg of its round trip in 7.5 hours. It flies back to its starting point, with the wind in 7 hours. If the average speed of the wind is 15 miles per hour, what is the speed of the airliner in still air? Answer by ewatrrr(24785) (Show Source):
Hi
D = rt (Distance the same or equal to and from)
Question States:
(v - 15mph)(7.5hr) = (v + 15mph)(7hr)
.5v = 14.5*15
v = 435mph
Checking: 420mph*7.5h = 450mph*7h = 3150mi Checks
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