document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=682308>Question 682308</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi!  I'm helping my stepdaughter with this problem, and we are not sure how to \"set up\" this problem in an equation.  It is stated:\r<BR>\n" );
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document.write( "A freight train leaves a station traveling 60 miles per hour.  Thirty minutes later a passenger train leaves the station in the same direction on a parallel track at a speed of 72 miles per hour.  How long will it take the passenger train to catch the freight train?\r<BR>\n" );
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document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #423129 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=423129\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A freight train leaves a station traveling 60 miles per hour.  Thirty minutes later a passenger train leaves the station in the same direction on a parallel track at a speed of 72 miles per hour.  How long will it take the passenger train to catch the freight train?<BR>\n" );
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document.write( "In 30 mins (1/2 hr) the 1st train has gone 30 miles (60*1/2)<BR>\n" );
document.write( "The 2nd train gains on the 1st at 12 mi/hr (72-60)<BR>\n" );
document.write( "30 mi/12 mi/hr = 2.5 hours.\r<BR>\n" );
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