document.write( "Question 257163: Soybean meal is 18% protein and cornmeal is 9% protein. How many pounds of each mixture should be mixed together in order to get 360lb mixture that is 11% protein? \n" ); document.write( "

Algebra.Com's Answer #189144 by Fombitz(32388) $\"\"$ $\"About$

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S-lbs of soybean
\n" ); document.write( "C-lbs of cornmeal
\n" ); document.write( "1. $\"18S%2B9C=11%28360%29\"$
\n" ); document.write( "2. $\"S%2BC=360\"$
\n" ); document.write( "Use eq. 2 to solve for S in terms of C. Substitute into eq. 1.
\n" ); document.write( " $\"S%2BC=360\"$
\n" ); document.write( " $\"S=360-C\"$
\n" ); document.write( "1. $\"18S%2B9C=3960\"$
\n" ); document.write( " $\"18%28360-C%29%2B9C=3960\"$
\n" ); document.write( " $\"6480-18C%2B9C=3960\"$
\n" ); document.write( " $\"-9C=-2520\"$
\n" ); document.write( " $\"C=280\"$
\n" ); document.write( " $\"S=360-C\"$
\n" ); document.write( " $\"S=360-280=80\"$
\n" ); document.write( "80 lbs of soybean, 280 lbs of cornmeal. \n" ); document.write( "

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