document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=708576>Question 708576</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi. I don't understand how I'm supposed to solve this problem. Could you please clearly explain how to set it up and solve it ...thank you.\r<BR>\n" );
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document.write( "The time is takes to build a skyscraper is proportional to its height and inversely proportional to the number of construction workers. If it takes 10 workers 2.5 years to build a 20 story building, how long will it take 40 workers to build a 120 story building?\r<BR>\n" );
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document.write( "_______ years </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #436150 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=436150\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The basic description is like this, using t for time, h for height, w for workers, and k is a proportionality constant.  The description is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=k%28h%2Fw%29 ALIGN=MIDDLE  ALT=\"t=k%28h%2Fw%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "10 workers 2.5 years to build a 20 story building : lets you determine k.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2A%28w%2Fh%29=k ALIGN=MIDDLE  ALT=\"t%2A%28w%2Fh%29=k\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so substituting, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=2.5%2810%2F20%29 ALIGN=MIDDLE  ALT=\"k=2.5%2810%2F20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, k=1.25.\r<BR>\n" );
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document.write( "You now know, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1.25%28h%2Fw%29 ALIGN=MIDDLE  ALT=\"t=1.25%28h%2Fw%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "how long will it take 40 workers to build a 120 story building?<BR>\n" );
document.write( "Just plug in the values.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1.25%28120%2F40%29 ALIGN=MIDDLE  ALT=\"t=1.25%28120%2F40%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=1.25*3=4<BR>\n" );
document.write( "t=4 years. </SPAN>\n" );
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