document.write( "Question 804648: A dairy farmer wants to mix a 75% protein supplement and a standard 25% protein ration to make 1100 pounds of a high-grade 50% protein ration. How many pounds of each should he use? \n" ); document.write( "
Algebra.Com's Answer #484849 by mananth(16946)\"\" \"About 
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percent ---------------- quantity
\n" ); document.write( "Protein I 75.00% ---------------- x pounds
\n" ); document.write( "Protein II 25.00% ------ 1100 - x pounds
\n" ); document.write( "Mixture 50.00% ---------------- 1100
\n" ); document.write( "Total 1100 pounds
\n" ); document.write( "75.00% x + 25.00% ( 1100 - x ) = 50.00% * 1100
\n" ); document.write( "75 x + 25 ( 1100 - x ) = 55000
\n" ); document.write( "75 x + 27500 - 25 x = 55000
\n" ); document.write( "75 x - 25 x = 55000 - -27500
\n" ); document.write( "50 x = 27500
\n" ); document.write( "/ 50
\n" ); document.write( " x = 550 pounds 75.00% Protein I
\n" ); document.write( " 550 pounds 25.00% Protein II
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\n" ); document.write( "m.ananth@hotmail.ca
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