document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1018390>Question 1018390</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At 9AM a train traveling 60 miles per hour leaves Los Angeles for San Francisco, a distance of 400 miles. At noon a car traveling at an average speed of 40 miles per hour leaves San Francisco for Los Angeles. At what time will the two vehicles pass each other? Please help! I know I need to draw a graph,but I am having trouble with writing an equation! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #634514 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=634514\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At 9AM a train traveling 60 miles per hour leaves Los Angeles for San Francisco, a distance of 400 miles. At noon a car traveling at an average speed of 40 miles per hour leaves San Francisco for Los Angeles. <BR>\n" );
document.write( "At what time will the two vehicles pass each other?<BR>\n" );
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document.write( "LA to SanFran DATA:<BR>\n" );
document.write( "rate = 60 mph ; distance = x miles ; time = d/r = x/60 hrs<BR>\n" );
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document.write( "SanFran to LA DATA:<BR>\n" );
document.write( "rate = 40 mph ; tistance = 400-x ; time = d/r = (400-x)/40 hrs<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "to SF time = to LA time + 3 hrs<BR>\n" );
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document.write( "x/60 = (400-x)/40 + 3 hrs<BR>\n" );
document.write( "-<BR>\n" );
document.write( "40x = 60(400-x) + 3*60*40<BR>\n" );
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document.write( "40x = 24000 - 60x + 7200<BR>\n" );
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document.write( "100x = 31200<BR>\n" );
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document.write( "x = 312 miles (distance of LA to SF car)<BR>\n" );
document.write( "time = 312 miles/60 mph = 5.2 hrs<BR>\n" );
document.write( "clock time = 9+5.2 = 14.2 = 2:12PM<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "  </SPAN>\n" );
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