document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1004911>Question 1004911</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 12 quart coolong system is tested and found with a 60% antifreeze solution. The ideal mixture should be a 50% antifreeze solution. How many quarts of solution need to be drained and replaced with pure water to reach the ideal mixture?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #621273 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=621273\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Existing mix: .60<BR>\n" );
document.write( "and x= amount to be drained in order to replace with pure water.<BR>\n" );
document.write( "12-x= amount of remaining 60% solution<BR>\n" );
document.write( ".6(12-x)= .5*12<BR>\n" );
document.write( "7.2-.6x= 6 Add -.6x on both sides:<BR>\n" );
document.write( "7.2= 6+.6x Subtract 6 on both sides:<BR>\n" );
document.write( "1.2= .6x Divide both sides by 2:<BR>\n" );
document.write( "x=2 You have to drain 2 quarts. </SPAN>\n" );
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