document.write( "Question 433834: 1 gallon of an alcohol solution was mixed with a 3 gallon of pure water to make a 7% alcohol solution. Find the perecent concentration of the first solution.\r
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Algebra.Com's Answer #307669 by jorel1380(3719)\"\" \"About 
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x+3=4(.93) percent water
\n" ); document.write( "x+3=3.72 gallons water
\n" ); document.write( ".28 gallons alcohol
\n" ); document.write( "You need to add 1 gallon of 28% alcohol to get the desired mixture..
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