document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=513102>Question 513102</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A pipe can fill a pool by itself in 2 hours. Another pipe can drain a pool filled with water in 3 hours. If 3 pipes of the first kind bring in water to the pool, while 4 pipes drain water, simultaneously, after how many hours will the pool 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 #342865 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=342865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A pipe can fill a pool by itself in 2 hours. Another pipe can drain a pool filled with water in 3 hours. If 3 pipes of the first kind bring in water to the pool, while 4 pipes drain water, simultaneously, after how many hours will the pool be filled?<BR>\n" );
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document.write( "A pipe can fill a pool by itself in 2 hours.<BR>\n" );
document.write( "3 of these can fill the pool in 2/3 hours, or can fill 1.5 pools per hour.<BR>\n" );
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document.write( "Another pipe can drain a pool filled with water in 3 hours.<BR>\n" );
document.write( "4 of these can drain the pool in 3/4 hour, can drain 4/3 pools per hour.<BR>\n" );
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document.write( "3/2 filled - 4/3 emptied per hour = 1/6 pool per hour<BR>\n" );
document.write( "--> 6 hours per pool<BR>\n" );
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