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Thread: PLease Help With Problem.

  1. October 7th 2009, 03:09 PM #1
    Soy
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    PLease Help With Problem.

    A traffic helicopter pilot finds that with a tailwind, her 120 km trip away from the airport takes 30 minutes. On her return trip to the airport, into the wind, she finds that her trip is 10 minutes longer. What is the speed of the helicopter? What is the speed of the wind?
    Last edited by Soy; October 7th 2009 at 03:33 PM.
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  2. October 7th 2009, 04:22 PM #2
    skeeter
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    Quote Originally Posted by Soy View Post
    A traffic helicopter pilot finds that with a tailwind, her 120 km trip away from the airport takes 30 minutes. On her return trip to the airport, into the wind, she finds that her trip is 10 minutes longer. What is the speed of the helicopter? What is the speed of the wind?
    (rate) \times (time) = distance

    with the wind ...

    (s + w) \cdot \frac{30}{60} = 120

    against the wind ...

    (s - w) \cdot \frac{40}{60} = 120


    solve the system for s, speed of the helicopter and w , windspeed.
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