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Today's Problem


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Wednesday, 15 february 2012

All Aboard

Proposed by GabiOffline
(7 comments)4.270 times displayed

Un tren lung de un sfert de kilometru, mergand cu viteza de 40 km/h, intra intr-un tunel lung de 2.25 km.

Cat de mult dureaza trenului sa parcurga tunelul de la momentul intrarii locomotivei pana cand iese si ultimul vagon ?


Tags: train
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