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Thread: Solving 2 equations

  1. #1
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    Post Solving 2 equations

    I need help with the following problem. I will appreciate any help to solve this:


    x+y=3421
    23% of x + 13.5% of y = 684.34


    What are the values of x and y so the both of above equations give correct answers.
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  2. #2
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    Re: Solving 2 equations

    $y=3421-x$

    $230x+135(3421-x)=684340$

    solve the second equation for $x$, then use the first equation to find the value of $y$
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  3. #3
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    Re: Solving 2 equations

    "23% of x + 13.5% of y = 684.34" can be written, as a "real" equation 0.23x+ 0.135y= 684.34. skeeter has gotten rid of the decimal fractions by multiplying the entire equation by 1000.
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  4. #4
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    Re: Solving 2 equations

    Thank you very much for the quick response and solution.
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