soy bean meal is 12% protein; cornmeal is 6% protein. how many pounds of each should be mixed together in order to get 240 lb mixture that is 8%?

Question

how many pounds of the cornmeal should be in the mixture?____

how many pounds of the soybean meal should be in the mixture?_____

Answer 1

Let S = lbs soy bean meal
and C = lbs corn meal
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S + C = 240 lbs.
0.12S + 0.06C = 0.08*240
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Two equations. Two unknowns. Solve for S and C.