Problema Solution
The rate of the jet stream is 200 miles per hour. Traveling with the jet stream, an airplane can fly 1400 miles in the same amount of time as it takes to fly 1000 miles against the jet stream. What is the airplane's average rate in calm air?
Answer provided by our tutors
Let
x = rate of plane in calm air
x + 200 = rate of plane with jet stream
x - 200 = rate of plane against jet stream
Travel time=Distance/Rate
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1400/(x+200)=1000/(x-200)
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click here to see the equation solved for x
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x=1,200 mph
The airplane's average rate in calm air is 1,200 mph.