document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=659535>Question 659535</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello,\r<BR>\n" );
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document.write( "Question: The radiator in a certain make of a car needs to contain 40 liters of 40% antifreeze. The radiator now contains 40 liters of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?\r<BR>\n" );
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document.write( "I have tried creating a table like my teacher suggested and am having a difficult time with that method. I know that my goal is to set up a system of equations but I never know where to place the variables and which number corresponds to that variable.\r<BR>\n" );
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document.write( "Thanks, <BR>\n" );
document.write( "     Katie </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #410824 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=410824\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "The actual amount of antifreeze required = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2840%2F100%29+=+16 ALIGN=MIDDLE  ALT=\"40%2840%2F100%29+=+16\"   DISABLED_style= \"max-width:90%; height:auto;\" > liter\r<BR>\n" );
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document.write( "The amount of anti freeze present in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40 ALIGN=MIDDLE  ALT=\"40\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20 ALIGN=MIDDLE  ALT=\"20\"   DISABLED_style= \"max-width:90%; height:auto;\" >% = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2820%2F100%29+=+8 ALIGN=MIDDLE  ALT=\"40%2820%2F100%29+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters\r<BR>\n" );
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document.write( "let the amount to be drained be <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\r<BR>\n" );
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document.write( "so the amount of antifreeze drained will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2820%2F100%29+=+0.2+x ALIGN=MIDDLE  ALT=\"x%2820%2F100%29+=+0.2+x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "amount of antifreeze still present is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8+-+0.2x ALIGN=MIDDLE  ALT=\"8+-+0.2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "since<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 is drained number liters of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100 ALIGN=MIDDLE  ALT=\"100\"   DISABLED_style= \"max-width:90%; height:auto;\" >% antifreeze it has \r<BR>\n" );
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document.write( "to be added to present <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8+-+0.2x ALIGN=MIDDLE  ALT=\"8+-+0.2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, we have <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8+-+0.2x+%2B+x+=+16 ALIGN=MIDDLE  ALT=\"8+-+0.2x+%2B+x+=+16\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.8x+=+16-8 ALIGN=MIDDLE  ALT=\"0.8x+=+16-8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+8%2F0.8 ALIGN=MIDDLE  ALT=\"x+=+8%2F0.8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+10%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters -------answer\r<BR>\n" );
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document.write( " </SPAN>\n" );
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