document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=919931>Question 919931</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this mixture word problem and show the steps to finding it. The answer is 12.5 quarts but I can't figure out how to get there:\r<BR>\n" );
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document.write( "A radiator contains 25 quarts of a water and antifreeze solution, of which 20% (by volume) is antifreeze.  How much of this solution should be drained and replaced with pure antifreeze for the new solution to be 60% (by volume) antifreeze? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558060 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558060\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A radiator contains 25 quarts of a water and antifreeze solution, of which 20% (by volume) is antifreeze. How much of this solution should be drained and replaced with pure antifreeze for the new solution to be 60% (by volume) antifreeze?<BR>\n" );
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document.write( "let x=amt of 20% antifreeze to be drained and replaced<BR>\n" );
document.write( "25-x=amt remaining in radiator.<BR>\n" );
document.write( "20%(25-x)+100%x=60%*25<BR>\n" );
document.write( "5-.20x+x=15<BR>\n" );
document.write( "0.80x=10<BR>\n" );
document.write( "x=10/.80=12.5<BR>\n" );
document.write( "amt of 20% antifreeze to be drained and replaced=12.5 quarts </SPAN>\n" );
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