document.write( "Question 200033: Soybean meal is 14% protien. Cornmeal is 7% protien. How many pound of each should be mixed together in order to get a 280 lb mixture that is 13% protien? \n" ); document.write( "

Algebra.Com's Answer #150399 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 pound of each should be mixed together in order to get a 280 lb
\n" ); document.write( " mixture that is 13% protein?
\n" ); document.write( ":
\n" ); document.write( "Let x = amt of 14% stuff
\n" ); document.write( "then
\n" ); document.write( "(280-x) = amt of 7% stuff
\n" ); document.write( ":
\n" ); document.write( "A simple equation:
\n" ); document.write( ".14x + .07(280-x) = .13(280)
\n" ); document.write( ":
\n" ); document.write( ".14x + 19.6 - .07x = 36.4
\n" ); document.write( ":
\n" ); document.write( ".14x - .07x = 36.4 - 19.6
\n" ); document.write( ":
\n" ); document.write( ".07x = 16.8
\n" ); document.write( "x = $\"16.8%2F.07\"$
\n" ); document.write( ":
\n" ); document.write( "x = 240 lb of 14% stuff
\n" ); document.write( "then
\n" ); document.write( "280 - 240 = 40 lb of 7% stuff
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solution
\n" ); document.write( ".14(240) = .07(40) = .13(280)
\n" ); document.write( " \n" ); document.write( "

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