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Algebra

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Soybean meal is 12% protein; cornmeal is 6% protein. howmany pounds of each should be mixed together to get a 240 pound mixture that is 8% protein?

  • Algebra -

    Sum of protein constituents=total protein
    .12S+.06P=240*(.08)
    S + P=240

    Those two equations will solve it.

  • Algebra -

    I don't understand the equations I am having a lot of trouble.

  • Algebra -

    well, if
    S+P=240, then S=240-P

    then

    .12S+.06P=240*.08 or
    .12(240-P) + .06P=240*.08
    solve for P

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