document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=204816>Question 204816</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1405802111/algebrahomeworkh>Longman Mathematics for IGCSE</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Sophie sets off on awalk at 6km/h. Ten minutes later, her brother Dave sets off after her on his bicycle at 15km/h. How far must Dave go to catch up with Sophie? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #154593 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=154593\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d=st<BR>\n" );
document.write( "For sophie: 6* 1/6 = 1 km she is ahead of dave when he starts.<BR>\n" );
document.write( "Dave is traveling 9km faster than she.<BR>\n" );
document.write( "9t=1<BR>\n" );
document.write( "t=1/9 h to catch up to her<BR>\n" );
document.write( "15 * 1/9 = 15/9 km distance dave must travel to catch up.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );