document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=178350>Question 178350</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An aquarium tank can hold 7700 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 44minutes. The second pipe can fill the tank in 77minutes by itself. When both pipes are working together, how long does it take them 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 #133323 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=133323\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An aquarium tank can hold 7700 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 44minutes. The second pipe can fill the tank in 77minutes by itself. When both pipes are working together, how long does it take them to fill the tank? <BR>\n" );
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document.write( "A quick way to do these types of problems is:<BR>\n" );
document.write( "product/sum<BR>\n" );
document.write( "t = 77*44/(77+44)<BR>\n" );
document.write( "t = 3388/121<BR>\n" );
document.write( "t = 28<BR>\n" );
document.write( "Saves minutes on a timed test. </SPAN>\n" );
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