document.write( "Question 426911: how many quarts of 6% butterfatmilk and 3% of butterfat milk should be mixed to yield 75 quarts of 5%butterfat milk \n" ); document.write( "
Algebra.Com's Answer #296873 by mananth(16946)\"\" \"About 
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............... percent ----------------quantity
\n" ); document.write( "butterfat milk 6----------------x quarts
\n" ); document.write( "butterfat milk 3----------------75-x quarts
\n" ); document.write( "Total 5.00% ---------------- 75
\n" ); document.write( "6x+3(75 -x)=5*75
\n" ); document.write( "6x+225-3x=375
\n" ); document.write( "6x-3x=375-225
\n" ); document.write( "3x=150
\n" ); document.write( "/3
\n" ); document.write( "x=50 quarts 6.00%
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