document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=225811>Question 225811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The radiator of Mark's 2003 Chevrolet holds 16 quarts. It is now filled with 20% antifreeze solution. How many quarts must Mark drain and replace with pure antifreeze for the radiator to contain a 50% antifreeze solution?\r<BR>\n" );
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document.write( "Note: You have only pure antifreeze available to add. You may not drain the entire radiator and fill it with 50% solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #168348 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=168348\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The radiator of Mark's 2003 Chevrolet holds 16 quarts. It is now filled with 20% antifreeze solution. How many quarts must Mark drain and replace with pure antifreeze for the radiator to contain a 50% antifreeze solution? <BR>\n" );
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document.write( "Let x = amount drained and replaced with 100% antifreeze<BR>\n" );
document.write( "then<BR>\n" );
document.write( "16-x = amount of 20% antifreeze solution<BR>\n" );
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document.write( ".20(16-x) + x = .50(16)<BR>\n" );
document.write( "3.2-.20x + x = 8<BR>\n" );
document.write( "3.2+ .8x = 8<BR>\n" );
document.write( ".8x = 4.8<BR>\n" );
document.write( "x = 6 quarts </SPAN>\n" );
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