document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=598485>Question 598485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are two small valves in the bottom of a tub filled with water.  If opened, one valve will empty the tub in 3 hours; the other will empty it in 6 hours.  If both valves are opened at the same time, how long will it take to empty the tub?  Please show work.\r<BR>\n" );
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document.write( "I have such a problem with algebra.  I will appreciate any help you can give me.\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Lynnette </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #378600 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=378600\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are two small valves in the bottom of a tub filled with water. If opened, one valve will empty the tub in 3 hours; the other will empty it in 6 hours. If both valves are opened at the same time, how long will it take to empty the tub? Please show work. <BR>\n" );
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document.write( "Let t = time (hours) to empty tub by both valves<BR>\n" );
document.write( "then<BR>\n" );
document.write( "t(1/3 + 1/6) = 1<BR>\n" );
document.write( "multiplying both sides by 6, we get:<BR>\n" );
document.write( "t(2 + 1) = 6<BR>\n" );
document.write( "t(3) = 6<BR>\n" );
document.write( "t = 6/3<BR>\n" );
document.write( "t = 2 hours </SPAN>\n" );
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