March 30, 2017

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A plane flies out of city A traveling an average of 325 mph, and reaches city B in 3 hours 24 minutes. On the return flight there is a tail wind that increases the plane's speed so it takes only 3 hours and 15 minutes to fly back to city A from city B. What is the speed of the tail wind?

  • Math - ,

    d = 325mi/h * 3.4h = 1105 miles.

    Vp = 1105mi / 3.25h = 340mi/h = speed of plane.

    Vw = 340mi/h - 325mi/h = 15mi/h = speed of tail wind.

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