document.write( "Question 385899: Pure Acid is to be added to a 10% acid solution to obtain 27 litters of 20% acid solution. What amounts of each should be used? \n" ); document.write( "
Algebra.Com's Answer #272913 by robertb(5830)\"\" \"About 
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Let x = # liters of pure acid that had to be added. Then
\n" ); document.write( "Then x + 0.10(27- x) = 0.20*27;
\n" ); document.write( "x + 2.7 - 0.10x = 5.4;
\n" ); document.write( "0.90x = 2.7;
\n" ); document.write( "x = 3 liters of pure acid.
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