document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=816165>Question 816165</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The radiator in the car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the aniotifreeze suggests that, for summer driving, optimal cooling of the engine is obtained with only 50% antifreeze. If the capacity of the radiator is 3.6 L, how much coolant should be drained and replaced with water to reduce the antifreeze concentration to the recommended level? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #491393 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=491393\">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=+.6%2A3.6+=+2.16+ ALIGN=MIDDLE  ALT=\"+.6%2A3.6+=+2.16+\"   DISABLED_style= \"max-width:90%; height:auto;\" > L antifreeze<BR>\n" );
document.write( "originally in radiator<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;\" > = liters of solution to<BR>\n" );
document.write( "be drained and replaced with water<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6x+ ALIGN=MIDDLE  ALT=\"+.6x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of antifreeze <BR>\n" );
document.write( "drained from radiator <BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+2.16+-+.6x+%29+%2F+3.6+=+.5+ ALIGN=MIDDLE  ALT=\"+%28+2.16+-+.6x+%29+%2F+3.6+=+.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Note that you start with 3.6 liters<BR>\n" );
document.write( "and end with 3.6 liters<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2.16+-+.6x+=+.5%2A3.6+ ALIGN=MIDDLE  ALT=\"+2.16+-+.6x+=+.5%2A3.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6x+=+2.16+-+1.8+ ALIGN=MIDDLE  ALT=\"+.6x+=+2.16+-+1.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6x+=+.36+ ALIGN=MIDDLE  ALT=\"+.6x+=+.36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+.6+ ALIGN=MIDDLE  ALT=\"+x+=+.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".6 liters must be drained and replaced with <BR>\n" );
document.write( "pure water<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=+.6%2A.6+=+.36+ ALIGN=MIDDLE  ALT=\"+.6%2A.6+=+.36+\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of alcohol is drained<BR>\n" );
document.write( "There is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3.6%2A.6+-+.36+ ALIGN=MIDDLE  ALT=\"+3.6%2A.6+-+.36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2.16+-+.36+=+1.8+ ALIGN=MIDDLE  ALT=\"+2.16+-+.36+=+1.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters alcohol left<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6+ ALIGN=MIDDLE  ALT=\"+.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of water is added to make<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.8+ ALIGN=MIDDLE  ALT=\"+1.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters alcohol and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3.6+-+1.8+=+1.8+ ALIGN=MIDDLE  ALT=\"+3.6+-+1.8+=+1.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "liters water<BR>\n" );
document.write( "They are 50% - 50%<BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );