document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=42125>Question 42125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Thomas can do a job in 4 hours.  Julia can do the same job in 6 hours.  How many hours will it take the two of them to do the job if they both work together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #27269 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=27269\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The formula is<BR>\n" );
document.write( "t/A + t/B = 1<BR>\n" );
document.write( "so we get<BR>\n" );
document.write( "t/4 + t/6 = 1<BR>\n" );
document.write( "multiply by 24 and solve for t, we get<BR>\n" );
document.write( "6t + 4t = 24<BR>\n" );
document.write( "10t = 24<BR>\n" );
document.write( "t = 2.4 hours </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );