document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143821>Question 143821</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve.\r<BR>\n" );
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document.write( "Jeff takes 5 hours longer to build a fence than it takes Bill. When they work together, it takes them 6 hours. How long would it take Bill to do the job alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104668 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=104668\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> THE FORMULA FOR THIS PROBLEM IS THE PRODUCT OF THEIR INDIVIDUAL HOURS DIVIDED BY THE SUM OF THEIR HOURS:<BR>\n" );
document.write( "X(X+5)/(X+X+5)=6<BR>\n" );
document.write( "X^2+5X/(2X+5)=6<BR>\n" );
document.write( "X^2+5X=6(2X+5)<BR>\n" );
document.write( "X^2+5X=12X+30<BR>\n" );
document.write( "X^2+5X-12X-30=0<BR>\n" );
document.write( "X^2-7X-30=0<BR>\n" );
document.write( "(X-10)(X+3)=0<BR>\n" );
document.write( "X-10=0<BR>\n" );
document.write( "X=10 HOURS IS THE ANSWER FOR BILL'S TIME TO BUILD THE FENCE. <BR>\n" );
document.write( "10+5=15 HOURS FOR JEFF TO BUILD THE FENCE.<BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "10*15/(10+15)=6<BR>\n" );
document.write( "150/25=6<BR>\n" );
document.write( "6=6 </SPAN>\n" );
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