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Math Help - Applications of Systems of Linear Equations

  1. #1
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    Applications of Systems of Linear Equations



    so i set this up doing 20x+20y=170 and 15x+15y=170 and tried to use a system of equation method to solve for this but it didnt seem to work.
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  2. #2
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    Quote Originally Posted by Nismo View Post


    so i set this up doing 20x+20y=170 and 15x+15y=170 and tried to use a system of equation method to solve for this but it didnt seem to work.
    1. I assume that x is the speed of the aircraft in still air and y is the speed of the wind. If so

    2. The resultant speed over ground is (x-y) when traveling against the wind and (x+y) when traveling with the wind.

    3. Therefore solve for x and y:

    \left|\begin{array}{l}20(x-y)=170\\15(x+y)=170\end{array} \right.
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  3. #3
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    ugh why do the little mistakes always kill me -_- thxs for the help!
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