document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=749732>Question 749732</A>: <I><SPAN STYLE=\"word-break: break-all;\"> from pipe a it takes 4 hours to fill the tank.from pipe b it takes 8 hours empty the tank.if the both pipes are opened how many hours to fill the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456126 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=456126\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> from pipe a it takes 4 hours to fill the tank.from pipe b it takes 8 hours empty the tank.if the both pipes are opened how many hours to fill the tank?<BR>\n" );
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document.write( "Let x = time (hours) to fill tank w/both pipes open<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x(1/4 - 1/8) = 1<BR>\n" );
document.write( "x(2/8 - 1/8) = 1<BR>\n" );
document.write( "x(1/8) = 1<BR>\n" );
document.write( "x/8 = 1<BR>\n" );
document.write( "multiply both sides by 8:<BR>\n" );
document.write( "x = 8 hours<BR>\n" );
document.write( " </SPAN>\n" );
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