document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=260741>Question 260741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Working alone, Andy can rake the leaves in his yard in 3 hours.  His sister Emma, working alone,can rake the leaves in 4 and a half hours.  If they work together,to the nearest minute, how quickly can they rake the leaves?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #192071 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=192071\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Working alone, Andy can rake the leaves in his yard in 3 hours. His sister Emma, working alone,can rake the leaves in 4 and a half hours. If they work together,to the nearest minute, how quickly can they rake the leaves? <BR>\n" );
document.write( "------------<BR>\n" );
document.write( "The hard way:<BR>\n" );
document.write( "Andy does 1/3 of the yard per hour.<BR>\n" );
document.write( "Emma does 1/4 of the yard per hour.<BR>\n" );
document.write( "Together, they do 1/3 + 1/4 = 7/12 per hour.<BR>\n" );
document.write( "--> 12/7 hours to do the yard.<BR>\n" );
document.write( "= 720/7 minutes = 103 minutes.<BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "The easy way, product/sum<BR>\n" );
document.write( "3*4/(3+4) = 12/7 hours<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );