document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=493589>Question 493589</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A big pipe can fill a tank in 7 minutes less than a small pipe. If they work together, the total time taken is 12 minutes. How long will it take for the big pipe to fill a tank alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #335408 by </B><A HREF=/tutors/aboutme.mpl?userid=deborabr><B>deborabr(181)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=deborabr><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=deborabr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=335408\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> small pipe = x<BR>\n" );
document.write( "big pipe = x-7<BR>\n" );
document.write( "x+x-7=12<BR>\n" );
document.write( "2x=12+7<BR>\n" );
document.write( "2x=19<BR>\n" );
document.write( "x=19/2<BR>\n" );
document.write( "the small pipe takes 19/2=9,5 min alone<BR>\n" );
document.write( "big pipe takes 9,5-7 = 2,5 min </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );