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Mensa Prize Puzzle Competition - June 2020


A 330 yard long train, travelling at 30 mph, enters a 3 mile long tunnel.

How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?




6 minutes and 22.5 seconds

Closing Date: 
Tuesday, June 30, 2020
Show Answer On: 
Wednesday, July 1, 2020