Posted by Randy on Thursday, May 3, 2012 at 11:24pm.
train A and train B traveling same direction. train A passes station 9:20, train B passes station 9:32, when will train B catch train A

math  incomplete  Steve, Friday, May 4, 2012 at 11:39am
depends on their relative speeds. If B is not going faster than A, it will never catch up.
When B passes the station, it is 12 minutes behind A. If it's going 60mph faster than A, it will catch up in 12 minutes.
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