document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=821904>Question 821904</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A tank can be filled by hose in 10 hours.  A tank can be emptied by drain pipe in 20 hours .  If drain is left opened while filling how long will it take to fill?  \r<BR>\n" );
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document.write( "x=20 hours. <BR>\n" );
document.write( "Is this right? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #494541 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=494541\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x/10-x/20=1<BR>\n" );
document.write( "x=20<BR>\n" );
document.write( "or<BR>\n" );
document.write( "(1/10)x-(1/20)x= 1<BR>\n" );
document.write( "1/10-1/20=1/x<BR>\n" );
document.write( "1/20=1/x<BR>\n" );
document.write( "check<BR>\n" );
document.write( "2-1=1<BR>\n" );
document.write( "ok\r<BR>\n" );
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document.write( " </SPAN>\n" );
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