document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=940079>Question 940079</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if john build a wall in 5 hours and mark build the same wall but in 8 hours then if john and mark will work together to build one wall, So what the time requested to build it ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572949 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=572949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> John can build 1/5 of the wall per hour.<BR>\n" );
document.write( "Mark can build 1/8 of the wall per hour. <BR>\n" );
document.write( "Working together, each hour they can build<BR>\n" );
document.write( "1/5+1/8=8/40+5/40=13/40<BR>\n" );
document.write( "of the wall.<BR>\n" );
document.write( "So, working together, it should take them<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F%28%2813%2F40%29%29=1%2A%2840%2F13%29=40%2F13=3%261%2F13 ALIGN=MIDDLE  ALT=\"2%2F%28%2813%2F40%29%29=1%2A%2840%2F13%29=40%2F13=3%261%2F13\"   DISABLED_style= \"max-width:90%; height:auto;\" > hours.<BR>\n" );
document.write( "Since 1/13 of an hour is 60/13 minutes, <BR>\n" );
document.write( "which is a little more than 4.6 minutes, but less than 5 minutes,<BR>\n" );
document.write( "I think they should estimate that it will take them<BR>\n" );
document.write( "3 hours and 5 minutes. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );