document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=40409>Question 40409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Company X can install chairs in a theater in 10 hours. Company Y can install them in 15 hours. How long would it take the two companies, working together to install the chairs.<BR>\n" );
document.write( "______hours.<BR>\n" );
document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #25780 by </B><A HREF=/tutors/aboutme.mpl?userid=fazlerabbi><B>fazlerabbi(9)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fazlerabbi><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=25780\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X can install chairs in 10 hrs. So, in 1 hour X performs 1/10 part of the work. <BR>\n" );
document.write( "Y can install chairs in 15 hrs. So, in 1 hour Y performs 1/15 part of the work. <BR>\n" );
document.write( "X and Y together in 1 hour perform (1/10 + 1/15) = 1/6 part of the work.\r<BR>\n" );
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document.write( "    1/6 part of the work is done in 1 hour<BR>\n" );
document.write( "So, 1 (whole) work is done in 6 hours.   </SPAN>\n" );
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