SOLUTION: A plane takes 6 hours to fly from San Francisco to New York, and 5 hours to return back. The wind velocity is 50 miles per hour, from New York to San Francisco. What is the speed o

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Question 99363: A plane takes 6 hours to fly from San Francisco to New York, and 5 hours to return back. The wind velocity is 50 miles per hour, from New York to San Francisco. What is the speed of the airplane.
Answer by aaaaaaaa(138) About Me  (Show Source):
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If the wind speed is 50 mph, it means the wind must have carried the plane back 300 miles while in the trip to New York (6 hours), and 250 miles forward in the trip back.

x = speed of the plane, in mph
6x+-+300+=+5x+%2B+250
x+=+550

The plane was at a speed of 550 mph.