document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=160711>Question 160711</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Weights of 75 pounds and 90 pounds sit at the ends of a 15 foot long board.  Where should the fulcrum be placed to balance the board?<BR>\n" );
document.write( "I don't know what formula to use to solve this equation.<BR>\n" );
document.write( "Any help would be appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #118491 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=118491\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the weight multiplied by the distance from the fulcrum is a quantity called the \"moment\"<BR>\n" );
document.write( "__  at balance, the moments on either side of the fulcrum are equal\r<BR>\n" );
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document.write( "75(x)=90(15-x) __ 75x=1350-90x __ 165x=1350 __ x=90/11\r<BR>\n" );
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document.write( "the fulcrum should be 90/11 feet from the 75 lb end<BR>\n" );
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