document.write( "Question 25796: Milk that is 4% butterfat is mixed with milk that is 1% butterfat to obtain 18 gallons of milk that is 2% butterfat. How many gallons of each type of milk are needed?
\n" ); document.write( "I don't even know where to start, PLEASE HELP!!!!!
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Algebra.Com's Answer #13883 by Paul(988)\"\" \"About 
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4x+1(18-x)=18(2)
\n" ); document.write( "4x+18-x=36
\n" ); document.write( "3x=18
\n" ); document.write( "x=6\r
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\n" ); document.write( "\n" ); document.write( "18-6=12\r
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\n" ); document.write( "\n" ); document.write( "Hence about 6 gallons of 4% is needed, and about 12 gallons of 1% is needed.
\n" ); document.write( "Paul.
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