document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1097682>Question 1097682</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A freight train and a passenger train are in stations 540km apart. The freight train leaves the station at noon travelling at 60km/hr in the direction of the passenger train . One hour later, the passenger train leaves and heads towards the freight train at 90km/h. At what time will the two trains meet.\r<BR>\n" );
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document.write( "I know why one of the equation is 540 = 60x + 90y, but I don't understand why the other equation is x=y+1. Please help me understand. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #712132 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52800)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=712132\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A freight train and a passenger train are in stations 540km apart. <BR>\n" );
document.write( "The freight train leaves the station at noon travelling at 60km/hr in the direction of the passenger train . <BR>\n" );
document.write( "One hour later, the passenger train leaves and heads towards the freight train at 90km/h. At what time will the two trains meet.\r<BR>\n" );
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document.write( "I know why one of the equation is 540 = 60x + 90y, but I don't understand why the other equation is x=y+1. Please help me understand.<BR>\n" );
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document.write( "You are on correct track.\r\n" );
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document.write( "First equation is 540 = 60x + 90y,  because one train covered 60x kilometers, while the second covered 90y kilometers, \r\n" );
document.write( "and together these two distances are exactly 540 km.\r\n" );
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document.write( "The second equation is x = y+1,  <U>BECAUSE</U>  the freight train started in 1 hour earlier (before) than the passenger train, \r\n" );
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document.write( "and, therefore, the freight train was on his way in one hour longer than the passenger train, before they meet each other.\r\n" );
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document.write( "Hope, this explanation will help you.\r\n" );
document.write( "</PRE>\r<BR>\n" );
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document.write( "See the lesson\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems.lesson>Travel and Distance problems</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems-for-two-bodies-moving-toward-each-other.lesson>Travel and Distance problems for two bodies moving in opposite directions</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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