document.write( "Question 278762: How many quarts of pure alcohol must be added to 10 quarts of 10% alcohol solution to obtain a mixture which is 25% alcohol? \n" ); document.write( "
Algebra.Com's Answer #202790 by Fombitz(32388)\"\" \"About 
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Let the amount of 100% alcohol be Q.
\n" ); document.write( "\"100Q%2B10%2810%29=25%28Q%2B10%29\"
\n" ); document.write( "\"100Q%2B100=25Q%2B250\"
\n" ); document.write( "\"75Q=150\"
\n" ); document.write( "\"Q=2\"
\n" ); document.write( "Add 2 quarts of 100% alcohol to get 12 quarts of 25% solution.
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