document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=162289>Question 162289</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A train leaves a station and travels north at 80 km per hour. three hours later a second train leaves on parallel tack and travel in the same direction at 120 km per hour. how far from the station will they meet? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119615 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=119615\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> </pre><font size=4><b><BR>\n" );
document.write( "Remember: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Speed=distance%2Ftime ALIGN=MIDDLE  ALT=\"Speed=distance%2Ftime\"   DISABLED_style= \"max-width:90%; height:auto;\" >, Working eqn<BR>\n" );
document.write( "We 1st calculate the distance <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5B1%5D ALIGN=MIDDLE  ALT=\"d%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > travelled of TR[1] after 3 hours:<BR>\n" );
document.write( "Via working eqn,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%5B1%5D=d%5B1%5D%2Ft%5B1%5D ALIGN=MIDDLE  ALT=\"S%5B1%5D=d%5B1%5D%2Ft%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5B1%5D=S%5B1%5Dt%5B1%5D=80%2A3=240km ALIGN=MIDDLE  ALT=\"d%5B1%5D=S%5B1%5Dt%5B1%5D=80%2A3=240km\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "After 3 hours, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B1%5D=t%5B2%5D ALIGN=MIDDLE  ALT=\"t%5B1%5D=t%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, via working eqn we get<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B1%5D=d%5B1%5D%2FS%5B1%5D ALIGN=MIDDLE  ALT=\"t%5B1%5D=d%5B1%5D%2FS%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----------------> EQN 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B2%5D=d%5B2%5D%2FS%5B2%5D ALIGN=MIDDLE  ALT=\"t%5B2%5D=d%5B2%5D%2FS%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > ---------------->EQN 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EQN1=EQN2 ALIGN=MIDDLE  ALT=\"EQN1=EQN2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5B1%5D%2FS%5B1%5D=d%5B2%5D%2FS%5B2%5D ALIGN=MIDDLE  ALT=\"d%5B1%5D%2FS%5B1%5D=d%5B2%5D%2FS%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F80=d%5B2%5D%2F120 ALIGN=MIDDLE  ALT=\"240%2F80=d%5B2%5D%2F120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3=d%5B2%5D%2F120 ALIGN=MIDDLE  ALT=\"3=d%5B2%5D%2F120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d%5B2%5D=360km%29 ALIGN=MIDDLE  ALT=\"highlight%28d%5B2%5D=360km%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Why highlighted? we'll see below:<BR>\n" );
document.write( ".<BR>\n" );
document.write( "how long it took <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=TR%5B2%5D ALIGN=MIDDLE  ALT=\"TR%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > to travel 360km? Via EQN 2,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B2%5D=360%2F120=3hours ALIGN=MIDDLE  ALT=\"t%5B2%5D=360%2F120=3hours\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In this span of ANOTHER 3 hours, how far <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=TR%5B1%5D ALIGN=MIDDLE  ALT=\"TR%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > travelled? Via EQN 1,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B1%5D=%28d%5B2%5D-d%5B1%5D%29%2FS%5B1%5D ALIGN=MIDDLE  ALT=\"t%5B1%5D=%28d%5B2%5D-d%5B1%5D%29%2FS%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5B1%5D=%28360-240%29%2F80=120%2F80=1.5hrs ALIGN=MIDDLE  ALT=\"t%5B1%5D=%28360-240%29%2F80=120%2F80=1.5hrs\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So, total time travlled by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=TR%5B1%5D=3hrs%2B1.5hrs=4.5hrs ALIGN=MIDDLE  ALT=\"TR%5B1%5D=3hrs%2B1.5hrs=4.5hrs\"   DISABLED_style= \"max-width:90%; height:auto;\" >; <BR>\n" );
document.write( "So Total Distance travlled by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=TR%5B1%5D ALIGN=MIDDLE  ALT=\"TR%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > in 4.5 hrs:<BR>\n" );
document.write( "via working eqn,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5B1.1%5D=S%5B1%5Dt%5B1.1%5D=80%2A4.5 ALIGN=MIDDLE  ALT=\"d%5B1.1%5D=S%5B1%5Dt%5B1.1%5D=80%2A4.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d%5B1.1%5D=360km%29 ALIGN=MIDDLE  ALT=\"highlight%28d%5B1.1%5D=360km%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. SEE highlighted, both are the same, and we'll meet at this distance. <BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( "Thank you,<BR>\n" );
document.write( "Jojo</pre><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );