document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=505268>Question 505268</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bath tub can be filled by the hot and cold water pipes in 4 minutes, and when full it can be emptied by the waste pipe in 5 minutes.  If it is half full, and all three pipes are set running, when will the tub 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 #339840 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=339840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bath tub can be filled by the hot and cold water pipes in 4 minutes, and when full it can be emptied by the waste pipe in 5 minutes.  If it is half full, and all three pipes are set running, when will the tub be filled?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let t = time (mins) tub is filled<BR>\n" );
document.write( "then<BR>\n" );
document.write( "t(1/4 - 1/5)= 1/2<BR>\n" );
document.write( "multiplying both sides by 20:<BR>\n" );
document.write( "t(5 - 4)= 10<BR>\n" );
document.write( "t(1)= 10<BR>\n" );
document.write( "t = 10 minutes </SPAN>\n" );
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