document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=831061>Question 831061</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many quarts of pure alcohol must be added to 10 quarts of 10% alcohol solution to obtain a mixture which is 25% alcohol? </SPAN>\n" );
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document.write( ".<BR>\n" );
document.write( "Let x = amount (quarts) of pure alcohol added<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x + .10(10) = .25(10+x)<BR>\n" );
document.write( "x + 1 = 2.5 + .25x<BR>\n" );
document.write( "x = 1.5 + .25x<BR>\n" );
document.write( ".75x = 1.5<BR>\n" );
document.write( "x = 1.5/.75<BR>\n" );
document.write( "x = 2 quarts </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );