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a=14% protein in soybean b=7% protein in cornmeal

how many pounds mixed together to get 280lb mixture that is 9% protein

a= ____lbs soybean

b= ____lbs cornmeal

Thank you from the bottom of my heart,

  • Looks like SCIENCE to me! -

    Please type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.

  • adult education -

    Looks like a classical algebra problem to me.

    280lbs=S+C weight equation
    280*.09=.14S+.07C protein equation

    How to solve?
    I would multiply the top equation by .07, then subtract one equation from the other.

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