Ummmm......, Wellllll...., OKAAAAAYYYY...... Yeah, sure. Thor >I'm only 17, so bear with me. > >Since you can backtrack, and meet the train at the end of the bridge, you >can >also go another fourth of the length of the bridge in the other direction >which would put you directly in the middle of the bridge when the train >reaches the first end of the bridge. > >In the time that it takes you to run the last half of the bridge, the train >travels the entire length of the bridge. Thus, 1 length of the bridge, >divided by 1/2 the length of the bridge, equals 2. In other words, the >train >is travelling twice as fast as you. > >Mike _______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com