document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=495049>Question 495049</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a water tank can be filled in 8 minutes and emptied in 9 minutes. if the drain is accidentally left open when the tank is filled, how long does it take to fill the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #335932 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=335932\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a water tank can be filled in 8 minutes and emptied in 9 minutes.<BR>\n" );
document.write( " if the drain is accidentally left open when the tank is filled, how long does it take to fill the tank?<BR>\n" );
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document.write( "Let t = time in minutes empty the tank with both valves open<BR>\n" );
document.write( "let an empty tank = 1<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F8 ALIGN=MIDDLE  ALT=\"t%2F8\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F9 ALIGN=MIDDLE  ALT=\"t%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "multiply by 72 to clear the denominators, results:<BR>\n" );
document.write( "9t - 8t = 72<BR>\n" );
document.write( "t = 72 minutes  </SPAN>\n" );
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