document.write( "Question 1091996: A freight train travels north at a rate of 50mph. A passenger train leaves 4 hours later on a parallel track and travels north at 90mph. How long will it take the passenger train to catch up to the freight train? \n" ); document.write( "
Algebra.Com's Answer #706510 by ikleyn(52776)\"\" \"About 
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\n" ); document.write( "For two bodies moving in the same direction (catching up problems) see the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Travel and Distance problems for two bodies moving in the same direction (catching up)\r
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document.write( "Actually, there are 3 methods of solving this kind of problems:\r\n" );
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document.write( "    -  using two  \"time - distance\"  equations,\r\n" );
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document.write( "    -  using one  \"time - distance\"  equation,   and\r\n" );
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document.write( "    -  MENTAL solution without using equations.\r\n" );
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document.write( "In the referred lesson you will find the descriptions and examples of solved problems for all three approaches.\r\n" );
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\n" ); document.write( "\n" ); document.write( "When you complete reading this lesson - let me know by sending the message through the \"Thank you\" window,
\n" ); document.write( "referring to the ID number of the current problem, which is 1091996.\r
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\n" ); document.write( "\n" ); document.write( "Then I will present my gift to you - the free of charge online textbook in Algebra-I.\r
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