document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=697453>Question 697453</A>: <I><SPAN STYLE=\"word-break: break-all;\"> kiran sets off on a walk at a speed<BR>\n" );
document.write( "of 6km/h. 10 minutes later, her<BR>\n" );
document.write( "brother Ali sets off her on his bicycle<BR>\n" );
document.write( "at 15km/h. How far must Ali go to<BR>\n" );
document.write( "catch up with Kiran? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430023 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=430023\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Start a stopwatch when Ali leaves. By then,<BR>\n" );
document.write( "Kiran has had a head start of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10%2F60+=+1%2F6+ ALIGN=MIDDLE  ALT=\"+10%2F60+=+1%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "and a distance of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6%2A%281%2F6%29+=+1+ ALIGN=MIDDLE  ALT=\"+6%2A%281%2F6%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the time in hrs on the stopwatch when<BR>\n" );
document.write( "Ali catches Kiran.<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+ ALIGN=MIDDLE  ALT=\"+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the distance in km that Ali travels<BR>\n" );
document.write( "in time <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Kiran's equation:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+-+1+=+6t++ ALIGN=MIDDLE  ALT=\"+d+-+1+=+6t++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Ali's equation:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15t+ ALIGN=MIDDLE  ALT=\"+d+=+15t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+6t+%2B+1+ ALIGN=MIDDLE  ALT=\"+d+=+6t+%2B+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15t+ ALIGN=MIDDLE  ALT=\"+d+=+15t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6t+%2B+1+=+15t+ ALIGN=MIDDLE  ALT=\"+6t+%2B+1+=+15t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9t+=+1+ ALIGN=MIDDLE  ALT=\"+9t+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1%2F9+ ALIGN=MIDDLE  ALT=\"+t+=+1%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15t+ ALIGN=MIDDLE  ALT=\"+d+=+15t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15%2A%281%2F9%29+ ALIGN=MIDDLE  ALT=\"+d+=+15%2A%281%2F9%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15%2F9+ ALIGN=MIDDLE  ALT=\"+d+=+15%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Ali must travel 1.667 km to catch Kiran<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+-+1+=+6t++ ALIGN=MIDDLE  ALT=\"+d+-+1+=+6t++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15%2F9+-+1+=+6%2A%281%2F9%29++ ALIGN=MIDDLE  ALT=\"+15%2F9+-+1+=+6%2A%281%2F9%29++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15%2F9+-+9%2F9+=+6%2A%281%2F9%29++ ALIGN=MIDDLE  ALT=\"+15%2F9+-+9%2F9+=+6%2A%281%2F9%29++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15+-+9+=+6+ ALIGN=MIDDLE  ALT=\"+15+-+9+=+6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6+=+6+ ALIGN=MIDDLE  ALT=\"+6+=+6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );