document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972698>Question 972698</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The capacity of a car radiator is 18 quarts. If it is currently filled with a 20% antifreeze solution, how many quarts must be drained and replaced with a 100% antifreeze solution to give 18 quarts of a 39% antifreeze solution?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594950 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=594950\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.2%2A18+=+3.6+ ALIGN=MIDDLE  ALT=\"+.2%2A18+=+3.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" > quarts of antifreeze at beginning<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = quarts of antifreeze solution to be drained off<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Note that you start with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+18+ ALIGN=MIDDLE  ALT=\"+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" > quarts<BR>\n" );
document.write( "and you end up with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+18+ ALIGN=MIDDLE  ALT=\"+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" > quarts<BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "You are draining off a 20% solution, so you are<BR>\n" );
document.write( "draining off <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.2x+ ALIGN=MIDDLE  ALT=\"+.2x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > quarts of the pure antifreeze<BR>\n" );
document.write( "--------------------------------------------<BR>\n" );
document.write( "You replace the solution drained off with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "quarts of pure antifreeze<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "I can now say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.6+-+.2x+%2B+x+%29+%2F+18+=+.39+ ALIGN=MIDDLE  ALT=\"+%28+3.6+-+.2x+%2B+x+%29+%2F+18+=+.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.6+%2B+.8x+%29+%2F+18+=+.39+ ALIGN=MIDDLE  ALT=\"+%28+3.6+%2B+.8x+%29+%2F+18+=+.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3.6+%2B+.8x+=+.39%2A18+ ALIGN=MIDDLE  ALT=\"+3.6+%2B+.8x+=+.39%2A18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.8x+=+7.02+-+3.6+ ALIGN=MIDDLE  ALT=\"+.8x+=+7.02+-+3.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.8x+=+3.42+ ALIGN=MIDDLE  ALT=\"+.8x+=+3.42+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+4.275+ ALIGN=MIDDLE  ALT=\"+x+=+4.275+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "4.275 quarts of solution must be drained off and replaced<BR>\n" );
document.write( "with 100% pure antifreeze <BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.6+%2B+.8x+%29+%2F+18+=+.39+ ALIGN=MIDDLE  ALT=\"+%28+3.6+%2B+.8x+%29+%2F+18+=+.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.6+%2B+.8%2A4.275+%29+%2F+18+=+.39+ ALIGN=MIDDLE  ALT=\"+%28+3.6+%2B+.8%2A4.275+%29+%2F+18+=+.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.6+%2B+3.42+%29+%2F+18+=+.39+ ALIGN=MIDDLE  ALT=\"+%28+3.6+%2B+3.42+%29+%2F+18+=+.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.02+=+.39%2A18+ ALIGN=MIDDLE  ALT=\"+7.02+=+.39%2A18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.02+=+7.02+ ALIGN=MIDDLE  ALT=\"+7.02+=+7.02+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
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