document.write( "Question 428518: How many liters of distilled water must be added to 140 liters of an 80% alcohol solution to obtain a 70% solution? i think the answer is 2.3 liters. \n" ); document.write( "
Algebra.Com's Answer #297826 by mananth(16946)\"\" \"About 
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------ Percent ---------------- quantity
\n" ); document.write( "Alcohol 80 ---------------- 140
\n" ); document.write( "water 0 ---------------- x
\n" ); document.write( "Total 70 ---------------- 140+x
\n" ); document.write( "80*140+ 0*x=70(140+x)
\n" ); document.write( "11200=9800+70x
\n" ); document.write( "
\n" ); document.write( "-70x=9800-11200
\n" ); document.write( "-70x=-1400
\n" ); document.write( "/-70x
\n" ); document.write( "x=20 gallons water
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