document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=604542>Question 604542</A>: <I><SPAN STYLE=\"word-break: break-all;\"> lisa can sweep the paths around her home in 30 minutes. Her sister Tania takes 20 minutes to do the same job. If they work together, how long will it take to complete 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 #381261 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=381261\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     lisa can sweep the paths around her home in 30 minutes. Her sister Tania takes 20 minutes to do the same job. If they work together, how long will it take to complete the job?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = time (minutes) it takes for both<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x(1/30 + 1/20) = 1<BR>\n" );
document.write( "multiplying both sides by 60 (common denominator) we get:<BR>\n" );
document.write( "x(2 + 3) = 60<BR>\n" );
document.write( "x(5) = 60<BR>\n" );
document.write( "x = 60/5<BR>\n" );
document.write( "x = 12 minutes<BR>\n" );
document.write( " </SPAN>\n" );
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