document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=412260>Question 412260</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much pure antifreeze must be added to 12 gallons of 20% antifreeze to make a 50% 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 #289592 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=289592\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How much pure antifreeze must be added to 12 gallons of 20% antifreeze to make a 50% antifreeze solution?<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.20*12 + 1.00x = 0.50(12+x)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "20*12 + 100x = 50*12 + 50x<BR>\n" );
document.write( "50x = 30*12<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x = (3/5)12<BR>\n" );
document.write( "x = 36/5<BR>\n" );
document.write( "x = 7 1/5 gallons (amt. of pure antifreeze needed)<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );