document.write( "Question 217266: To make low-fat cottage cheese, milk containing 4% butterfat is mixed with milk containing 1% butterfat to obtain 15 gallons of mixture containing 2% butterfat. How many gallons of each milk must be used? \n" ); document.write( "
Algebra.Com's Answer #163826 by rfer(16322)\"\" \"About 
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.04x+.01(15-x)=15(.02)
\n" ); document.write( ".04x+.15-.01x=.3
\n" ); document.write( ".03x=.29
\n" ); document.write( "x=9.7
\n" ); document.write( ".04=9.7 gal
\n" ); document.write( ".01=5.3 gal
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