document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=219776>Question 219776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A radiator contains 15 gal of a 20% antifreeze solution. How many gallons must be drained from the radiator and replaced by pure antifreeze so that the radiator will contain 15 gal of a 40% 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 #165206 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=165206\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (15*.20)-(x*.20)+x=15*.40<BR>\n" );
document.write( "3-.2x+x=6<BR>\n" );
document.write( ".8x=6-3<BR>\n" );
document.write( ".8x=3<BR>\n" );
document.write( "x=3/.8                     <BR>\n" );
document.write( "x=3.75 gal. of pure antifreeze is used.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "3-3.75*.20+3.75=6<BR>\n" );
document.write( "3-.75+3.75=6<BR>\n" );
document.write( "6=6 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );