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Math Help - [SOLVED] Word Probelm Help!!!! Please!

  1. #1
    littlemissgothicsue
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    Unhappy [SOLVED] Word Probelm Help!!!! Please!

    ok i really need this word problem help!

    together fifi and maxx weigh 72 pounds,
    Maxx and Sparky have a combined weight of 86 pounds
    Lastly, the sum of Sparky's and Fifi's weights is 35 pounds

    i dont understand how to set it up or how to solve it
    i am suppose to use variables and complete sentences

    thanks!
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  2. #2
    Super Member
    earboth's Avatar
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    Quote Originally Posted by littlemissgothicsue
    ok i really need this word problem help!

    together fifi and maxx weigh 72 pounds,
    Maxx and Sparky have a combined weight of 86 pounds
    Lastly, the sum of Sparky's and Fifi's weights is 35 pounds

    i dont understand how to set it up or how to solve it
    i am suppose to use variables and complete sentences

    thanks!
    Hello,

    let m be the weight of Max;
    let f be the weight of Fiffi;
    let s be the weight of Sparky.

    Now you can translate your sentences into equations:
    1.: f+m =72
    2.: m + s=86
    3.: f + s=35

    This is a system of linear equations and there are a lot of ways to solve it.

    Never mind which one you use you should come up with this solution:
    f=\frac{21}{2},\ m=\frac{123}2},\ s=\frac{49}{2}

    Greetings

    EB
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