document.write( "Question 249770: 1. How many gallons of a 10% solution. Would need to be added to a 20% solution to obtain 50 gallons of a 30% solution?\r
\n" ); document.write( "\n" ); document.write( "2.How many gallons of milk containing 4% fat is mixed with milk containg 1% fat to obtain a 15 gallon mixture containing 2% fat?
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Algebra.Com's Answer #181863 by Alan3354(69443)\"\" \"About 
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1. How many gallons of a 10% solution. Would need to be added to a 20% solution to obtain 50 gallons of a 30% solution?
\n" ); document.write( "It's not possible. Adding 10% to 20% will reduce the concentration.
\n" ); document.write( "Any mix of 2 concentrations will always result in a %age between the two.
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\n" ); document.write( "2.How many gallons of milk containing 4% fat is mixed with milk containg 1% fat to obtain a 15 gallon mixture containing 2% fat?
\n" ); document.write( "0.04*x + 0.01*(15-x) = 0.02*15
\n" ); document.write( "4x + 15-x = 30
\n" ); document.write( "x = 5 gallons of 4%
\n" ); document.write( "10 gallons of 1%\r
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