document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=284235>Question 284235</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this problem.  I am totally confused when it comes to D=RT word problems.\r<BR>\n" );
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document.write( "A local commuter train leaves downtown at 5 pm.  And express commuter train leaves downtown at 5:30 pm.  The express train travels twice as fast as the local, so the local  has to pull over on a siding to avoid a crash 45 miles from downtown.  At what time would the crash occur?   How fast is each train going? \r<BR>\n" );
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document.write( "Thanks for your help!<BR>\n" );
document.write( "Christine </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #206262 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=206262\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the distance for both trains is 45 mi<BR>\n" );
document.write( "the time for the local train is 1/2 hr longer ___ for the times to be equal, this must be subtracted<BR>\n" );
document.write( "the speed of the express is twice the speed of the local\r<BR>\n" );
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document.write( "time equals distance divided by rate\r<BR>\n" );
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document.write( "45 / 2r = (45 / r) - (1/2)\r<BR>\n" );
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document.write( "45 = 90 - r ___ r = 45 (this is the speed of the local train)\r<BR>\n" );
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document.write( "2r = 90 (this is the speed of the express train)\r<BR>\n" );
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document.write( "the travel time to the \"crash\" site is 1/2 hr for the express and 1 hr for the local<BR>\n" );
document.write( "___ so the crash time is 6:00 pm </SPAN>\n" );
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