document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=37542>Question 37542</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It takes Tom 4 hours to buid a fence. If he hires Jack to help him, together they can do the job in just 3 hours. If Jack built the same fence alone, how long would it take him? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23153 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=23153\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It takes Tom 4 hours to buid a fence. If he hires Jack to help him, together they can do the job in just 3 hours. If Jack built the same fence alone, how <BR>\n" );
document.write( "long would it take him?\r<BR>\n" );
document.write( "\n" );
document.write( "Tom Data:<BR>\n" );
document.write( "time to do job= 4 hours;  rate =1/4 job/hr.<BR>\n" );
document.write( "Jack Data:<BR>\n" );
document.write( "time to do job= x hrs ; rate = 1/x job/hr<BR>\n" );
document.write( "Together Data:<BR>\n" );
document.write( "time to do job= 3 hrs.; rate = 1/3 job/hr<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "rate + rate = rate<BR>\n" );
document.write( "1/4 + 1/x = 1/3<BR>\n" );
document.write( "3x + 12 = 4x<BR>\n" );
document.write( "x=12 hrs. (Time is would take Jack to do job alone)<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );