document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723016>Question 723016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Twin brothers, Andy and Brian, can mow their grandparents lawn together in 40 min. Brian could mow the lawn by himself in 18 min more than it would take Andy. How long would it take each person to mow the lawn? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442991 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=442991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 40/a+40/b=1<BR>\n" );
document.write( "b=a+18<BR>\n" );
document.write( "a=72<BR>\n" );
document.write( "b=90<BR>\n" );
document.write( "40/72+ 40/90=1<BR>\n" );
document.write( "5/9+4/9=1\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );