document.write( "Question 192206: please help me.........\r
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\n" ); document.write( "\n" ); document.write( "2 trains leave the station at the same time.The East bound train travels at 65mph. While the west bound train is going 55 mph. How long will it take the 2 trains to be 420 miles apart?
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Algebra.Com's Answer #144251 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Going in opposite directions, their relative speed is the sum, 55+65 = 120 mph.
\n" ); document.write( "420 miles/120 mph = 3.5 hours.
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