<PRE><B>Question 304420</B>
Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get a 280lb mixture that is 12% protein? 
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Equation:
0.14x + 0.07(280-x) = 0.12*280
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Multiply thru by 100 to get:
14x + 7*280 - 7x = 12*280
7x = 5*280
x = 5*40
x = 200 lb (amt of soybeal meal needed for the mixture)
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280-x = 80 lb (amt of cornmeal needed for the mixture)
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Cheers,
Stan H.</PRE>