document.write( "Question 448873: 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 13% protein. How many pounds of cornmeal?
\n" ); document.write( "How many pounds of soybean? \n" ); document.write( "
Algebra.Com's Answer #308818 by ankor@dixie-net.com(22740)\"\" \"About 
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Soybean meal is 14% protein, cornmeal is 7% protein.
\n" ); document.write( " How many pounds of each should be mixed together in order to get 280-lb mixture that is 13% protein.
\n" ); document.write( " How many pounds of cornmeal? How many pounds of soybean?
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\n" ); document.write( "Let x = amt of soy
\n" ); document.write( "the states that the resulting total will equal 280 lb, therefore
\n" ); document.write( "(280-x) = amt of cornmeal
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\n" ); document.write( "Write a per-cent protein equation in decimal form:
\n" ); document.write( ":
\n" ); document.write( ".14x + .07(280-x) = .13(280)
\n" ); document.write( ".14x + 19.6 - .07x = 36.4
\n" ); document.write( ".14x - .07x = 36.4 - 19.6
\n" ); document.write( ".07x = 16.8
\n" ); document.write( "x = \"16.8%2F.07\"
\n" ); document.write( "x = 240 lb of soy
\n" ); document.write( "then
\n" ); document.write( "280 - 240 = 40 lb of corn meal
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this
\n" ); document.write( ".14(240) + .07(40) =
\n" ); document.write( "33.6 + 2.8 = 36.4 \n" ); document.write( "
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