document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=997755>Question 997755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If it takes Tap A 4 hours to fill an empty tank and Tap B 6 hours to drain the same tank when full, how long will it take for the tank to fill up when both taps are open? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #615718 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=615718\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If it takes Tap A 4 hours to fill an empty tank and Tap B 6 hours to drain the same tank when full, how long will it take for the tank to fill up when both taps are open?<BR>\n" );
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document.write( "Tap A adds 1/4 tank/hour<BR>\n" );
document.write( "Tap B adds -1/6 tank/hour<BR>\n" );
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document.write( "Together, 1/4 - 1/6 = 1/12 tank/hr<BR>\n" );
document.write( "--> 12 hours/tank<BR>\n" );
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