document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=38982>Question 38982</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Joe, Jane, and Bill weigh 40, 70, and 90 lbs. respectively and use a plank 15 ft. long for a teeterboard. Bill sits 3 ft., Jane 5 ft., and Joe 8 ft. from the fulcrum, on the same side. How far must their father, who weighs 188 lbs., sit from the fulcrum to balance his children?\r<BR>\n" );
document.write( "\n" );
document.write( "(Not from a book) I got stumped on trying to put this equation together. Thank you for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #382650 by </B><A HREF=/tutors/aboutme.mpl?userid=MaxW><B>MaxW(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MaxW><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=382650\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> using the equation d1(w1) = d2(w2)\r<BR>\n" );
document.write( "\n" );
document.write( "Joe = 40 lbs(8)<BR>\n" );
document.write( "Jane = 70 lbs(5)<BR>\n" );
document.write( "Bill = 90 lbs(3)<BR>\n" );
document.write( "Father = 188 lbs(x)\r<BR>\n" );
document.write( "\n" );
document.write( "Therefore<BR>\n" );
document.write( "40(8) + 70(5) + 90(3) = 188(x)<BR>\n" );
document.write( "320 + 350 + 270 = 188x<BR>\n" );
document.write( "940 = 188x  divide both side by 188<BR>\n" );
document.write( "x = 5\r<BR>\n" );
document.write( "\n" );
document.write( "Joe, Jane and Bill's father must seat 5ft from the fulcrum. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );