Question

Soybean meal is 14% protein. cornmeal is 7% protein. How many of each should be mixed together to get 280lb. that is 9% protein?

Answer 1

Soybean meal is 14% protein; cornmeal is 7% protein.
How many pounds of each should be mixed together to
get 280-lb mixture that is 9% protein?
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Quantity Eq: S + C = 280 lb
Protein Eq: 0.14S+0.07C = 0.09*280
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Multiply thru 1st by 14
Multiply thru 2nd by 100
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14S + 14C = 14*280
14S + 7C = 9*280
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Subtract and solve for "C":


7C = 5*280
C = 200 lb (amt. of cornmeal needed in the mix)
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Since S+C = 280, S = 80 lb (amt. of soybean needed in the mix)

Answer 2

Awsome.. Thanks

Answer 3

Welks! :D