document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=850680>Question 850680</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jennifer takes 4 hours to do a job.john takes 6 hours to do the same job.working together,how many hours will it take them to do the job? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #512311 by </B><A HREF=/tutors/aboutme.mpl?userid=JulietG><B>JulietG(1812)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JulietG><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=JulietG><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=512311\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jennifer finishes the work at a rate of 1/4 per hour<BR>\n" );
document.write( "John finishes the work at a rate of 1/6 per hour<BR>\n" );
document.write( "After one hour, 1/4 + 1/6 is finished, or 3/12 + 2/12 -> 5/12<BR>\n" );
document.write( ".<BR>\n" );
document.write( "If they do the job at the rate of 5/12 per hour, how long will it take to complete 12/12?<BR>\n" );
document.write( "12/5 = 2.4 hours<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let's check.<BR>\n" );
document.write( "2.4 hours for Jennifer at 1/4 per hour = 2.4 * .25 = .6 of the job<BR>\n" );
document.write( "2.4 hours for John at 1/6 per hour = 2.4 * 1/6 = .4 of the job<BR>\n" );
document.write( ".6 + .4 = 1.0<BR>\n" );
document.write( "Success! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );