document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1152573>Question 1152573</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Four workers are building a house. In five days they built half the house. But<BR>\n" );
document.write( "winter is coming and they want to finish building the house in two more days.<BR>\n" );
document.write( "How many friends should the workers call for help, if they do not want to bother<BR>\n" );
document.write( "more people than is necessary?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #774602 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=774602\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Four workers are building a house.<BR>\n" );
document.write( " In five days they built half the house. <BR>\n" );
document.write( "But winter is coming and they want to finish building the house in two more days.<BR>\n" );
document.write( "How many friends should the workers call for help, if they do not want to bother<BR>\n" );
document.write( "more people than is necessary?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find how many man-days to complete a house <BR>\n" );
document.write( "2(4*5) = 40 man-days<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let m = no. of additional men required to complete in 2 days<BR>\n" );
document.write( "(20 man-days to complete 1st half the house)<BR>\n" );
document.write( "20 + 2(m+4) = 40<BR>\n" );
document.write( "2m + 8 = 40 - 20<BR>\n" );
document.write( "2m = 20 - 8<BR>\n" );
document.write( "2m = 12<BR>\n" );
document.write( "m = 6 more men required </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );