document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=730609>Question 730609</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A certain automobile cooling system contains 11.0 liters of of coolant that is 15% antifreeze.  How many liters of mixture must be removed so that, when it is replaced with pure antifreeze, a mixture of 25% antifreeze will result?\r<BR>\n" );
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document.write( "I know that I have to use the 100% somewhere, but I can't see how to use it.  It's very odd seeing this as a subtraction problem.\r<BR>\n" );
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document.write( "I tried <BR>\n" );
document.write( "  15%  11-x   .15<BR>\n" );
document.write( "  100%  x      1<BR>\n" );
document.write( "  25%  11     .25<BR>\n" );
document.write( "I need to see it in a table form so that my mind can process it.<BR>\n" );
document.write( "thanks   Mark  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446751 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=446751\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Before adjustment, 11.0 liters of mixture is in the system and after adjustment, still 11.0 liters of mixture is in the system.  Give a variable, say, q, for how much material to remove and how much pure antifreeze to add.  \r<BR>\n" );
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document.write( "(pure antifreeze ingredient)/(antifreeze solution)=25%, what's wanted.\r<BR>\n" );
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document.write( "You want to adjust from 15% to 25%.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2811.0%2A15-q%2A15%2Bq%2A100%29%2F%2811.0%29=25 ALIGN=MIDDLE  ALT=\"%2811.0%2A15-q%2A15%2Bq%2A100%29%2F%2811.0%29=25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Think to understand how that makes sense.\r<BR>\n" );
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document.write( ".<BR>\n" );
document.write( "The steps should lead to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11%2A15%2B%28100-15%29q=25%2A11 ALIGN=MIDDLE  ALT=\"11%2A15%2B%28100-15%29q=25%2A11\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=q=11%2A%2810%29%2F85 ALIGN=MIDDLE  ALT=\"q=11%2A%2810%29%2F85\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=q=1.29 ALIGN=MIDDLE  ALT=\"q=1.29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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