document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=212067>Question 212067</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many quarts of pure antifreeze must be added to 5 quarts of 10% antifreeze solution to obtain a 30% antifreeze solution </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #160168 by </B><A HREF=/tutors/aboutme.mpl?userid=HyperBrain><B>HyperBrain(694)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=HyperBrain><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=160168\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=the amount of pure antifreeze required<BR>\n" );
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document.write( "If we add x quarts to 5 liters, we get x+5 quarts.<BR>\n" );
document.write( "For x quarts of pure antifreeze, we have x quarts of antifreeze.<BR>\n" );
document.write( "For 5 quarts of 10% antifreeze, we have (0.1)(5 quarts)=0.5 quart of antifreeze<BR>\n" );
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document.write( "So, we have the equation,<BR>\n" );
document.write( "0.3(x+5)=x+0.5<BR>\n" );
document.write( "0.3x+1.5=x+0.5<BR>\n" );
document.write( "0.7x=1<BR>\n" );
document.write( "7x=10<BR>\n" );
document.write( "x=<u>10/7 quarts</u> </SPAN>\n" );
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