document.write( "Question 161488: Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 lb mixture that is 12% protein? \n" ); document.write( "
Algebra.Com's Answer #118953 by ankor@dixie-net.com(22740)\"\" \"About 
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Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each
\n" ); document.write( " should be mixed together in order to get 280 lb mixture that is 12% protein?
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\n" ); document.write( "Let x = amt of 14% protein
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\n" ); document.write( "It states that the total mixture weight is 280 lb, therefore:
\n" ); document.write( "(280-x) = 7% protein
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\n" ); document.write( "Write a decimal equivalent equation:
\n" ); document.write( ".14x + .07(280-x) = .12(280)
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\n" ); document.write( ".14x + 19.6 - .07x = 33.6
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\n" ); document.write( ".14x - .07x = 33.6 - 19.6
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\n" ); document.write( ".07x = 14
\n" ); document.write( "x = \"14%2F.07\"
\n" ); document.write( "x = 200 lb of 14% protein, then 80 lb of 7% required
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\n" ); document.write( "Check soltution in the original equation
\n" ); document.write( ".14(200) + .07(80) = .12(280)
\n" ); document.write( "28 + 5.6 = 33.6 \n" ); document.write( "
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