Algebra

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Soymeal is 12% protein; cornmael is 6% protein. How many pounds of each should be mixed together in order to get 240lb mixture that us 9% protein

• Algebra -

amount of 12% needed --- x lb
amount of 6% neede --- 240-x lb

solve for x
.12x + .06(240-x) = .09(240)
times 100
12x + 6(240-x) = 9(240)

I will let you finish it

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