Two trains, A and B, leave their respective starting points at the same time and travel in opposite directions. They travel at constant speeds, and pass at point M. One travels at twice the speed of the other. If one of the trains leaves five minutes late they pass at a point 2 miles from point M.

What is the speed of the slow train, in miles per hour?

Wonder if there is a unique solution (with the same data) if the two trains are moving in the same direction, i.e., if the slow train is pulling away from the fast train and the fast train is catching up on the slow train.

Haven't worked it out yet, but just wondering.

Posted by Sanjay on 2003-05-10 07:54:17