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Math Help - Find the plane speed

  1. #1
    Junior Member
    Joined
    Jun 2009
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    28

    Find the plane speed

    Can somone help me make this equation more clear, help me symbolize and organize.



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  2. #2
    Newbie
    Joined
    Oct 2009
    Posts
    19
    Speed = Distance/Time

    With the wind:

    x + y = 2500/225

    Against the wind:

    x - y = 2500/270

    225 = 3h 45m
    270 = 4h 30m
    x = Plane's speed
    y = Wind's speed

    225x + 225y = 2500 (1)
    270x + 270y = 2500 (2)

    Simultaneous equations, I'm sure you can solve it from here.
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  3. #3
    Super Member
    Joined
    Jan 2009
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    591
    Quote Originally Posted by xxravenxx View Post
    Speed = Distance/Time
    With the wind:
    x + y = 2500/225

    Against the wind:
    x - y = 2500/270
    ...

    225x + 225y = 2500 (1)
    270x + 270y = 2500 (2)

    Simultaneous equations, I'm sure you can solve it from here.
    xxravenxx small typo (sign value should be minus).

    .
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