document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=471832>Question 471832</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cold water faucet can fill a sink within 12 minutes and a hot water faucet can fill it in 15 minutes. The drain can empty the sink in 25 minutes. If both faucets are on and the drain is open, how long will it take to fill the sink? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #323558 by </B><A HREF=/tutors/aboutme.mpl?userid=amoresroy><B>amoresroy(361)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=amoresroy><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=amoresroy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=323558\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let t = the number of minutes it will take to fill the sink\r<BR>\n" );
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document.write( "t(1/12 + 1/15 - 1/25) = 1\r<BR>\n" );
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document.write( "t (25/300 + 20/300 - 12/300) = 1<BR>\n" );
document.write( "33t/300 = 1<BR>\n" );
document.write( "t = 300/33<BR>\n" );
document.write( "t = 9.09 mins </SPAN>\n" );
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