document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=100919>Question 100919</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In order to full a water tank three pipes producing 12L/min, 16L/min, 20L/min of water are turned on at 30 min intervals. If they are turned on in the order given, how long after the first pipe is turned on will a 1200 L tank be filled? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #73710 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=73710\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x=minutes ... 12(x)+16(x-30)+20(x-60)=1200\r<BR>\n" );
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document.write( "12x+16x-480+20x-1200=1200\r<BR>\n" );
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document.write( "48x=2880 ... x=60\r<BR>\n" );
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document.write( "last pipe not needed </SPAN>\n" );
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