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Algebra

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I have a problem that I need help with can someone show me the steps
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Soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each shoul be mixed to get a 350-lb mixture that is 12% protein?

  • Algebra -

    Why do i never get any help

  • Algebra -

    let the amount of 16% mix to be added be x lb
    let the amount of 9% mix to be added be 350-x lb

    .16x + .09(350-x) = .12(350)
    multiply by 100
    16x + 9(350-x) = 12(350)
    16x + 3150 - 9x = 4200
    7x = 1050
    x = 150
    then 350-x = 200

    They should use 150 lb of the 16% mix and
    200 lb of the 9% mix

  • Algebra -

    Thank you

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