document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=515474>Question 515474</A>: <I><SPAN STYLE=\"word-break: break-all;\"> BUILDING BRICK WALL:<BR>\n" );
document.write( "The time, t, required to build a brick wall varies inversely as the number of people, n,  working on it. If it takes 8 hours for five bricklayers to build a wall, how long will it take four bricklayers to build a wall? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #343998 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=343998\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If 5 bricklayers do the work in 8 hours, then we can model it as each bricklayer does 1/5 of the whole job in 8 hr or 1/40 of the job per hr.<BR>\n" );
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document.write( "That means it would take each bricklayer 40 hr to do the job working alone.<BR>\n" );
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document.write( "(1/40)*5 = 5/40 = 1/8 of the job per hr, so the whole job takes 8 hr.<BR>\n" );
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document.write( "How long will it take 4 bricklayers to build the wall?<BR>\n" );
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document.write( "(1/40)*4 = 4/40 = 1/10 per hr.  So it will take 4 bricklayers 10 hr.<BR>\n" );
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document.write( "Done. </SPAN>\n" );
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