document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=404877>Question 404877</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi I am needing some help on this word problem please. \r<BR>\n" );
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document.write( "A sink can be filled by the cold water facuet in 3 mins. The drain can empty a full sink in 4 mins. If the sink is empty and both the cold water facuet and the drain are open, how long will it take the sink to overflow.\r<BR>\n" );
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document.write( "Thank you so much </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #286104 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=286104\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a rate problem.<BR>\n" );
document.write( "Add the rates to get the resulting rate.<BR>\n" );
document.write( "Filling the sink in a (+) rate<BR>\n" );
document.write( "Emptying the sink is a (-) rate <BR>\n" );
document.write( "The best way to understand it is<BR>\n" );
document.write( "to express solution in words.<BR>\n" );
document.write( "(1 sink filled)/(minutes to fill sink) - (1 sink drained)/(minutes to drain sink) = (1 sink filled)/(minutes to fill sink w/drain and faucet open)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3+-+1%2F4+=+1%2Fx ALIGN=MIDDLE  ALT=\"1%2F3+-+1%2F4+=+1%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12x ALIGN=MIDDLE  ALT=\"12x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x+-+3x+=+12 ALIGN=MIDDLE  ALT=\"4x+-+3x+=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+12 ALIGN=MIDDLE  ALT=\"x+=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "It takes 12 min for the sink to overflow with faucet<BR>\n" );
document.write( "and drain open<BR>\n" );
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