document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=500417>Question 500417</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A red car leaves San Francisco heading south going 52 mph. One hour later a blue car leaves heading in the same direction going 65 mph. How long before the blue car passes the red car? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #338138 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=338138\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A red car leaves San Francisco heading south going 52 mph. One hour later a blue car leaves heading in the same direction going 65 mph. How long before the blue car passes the red car?<BR>\n" );
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document.write( "The red car has a head start of 52 mi/hr * 1 hr = 52 mi<BR>\n" );
document.write( "Since the are both traveling the same direction, they have a RELATIVE speed of<BR>\n" );
document.write( "65 - 52 = 13 mi/hr<BR>\n" );
document.write( "Considering relative speed, we imagine the red car standing still and the blue<BR>\n" );
document.write( "car moving toward it at 13 mi/hr.<BR>\n" );
document.write( "So it will take 52 mi/(13 mi/hr) = 4 hrs for the blue car to overtake the red one.<BR>\n" );
document.write( "Ans: 4 hrs </SPAN>\n" );
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