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A train take 2 minutes to acquire its fu...

A train take 2 minutes to acquire its full speed of 60 kmph from rest and 1 minute to come to rest from the full speed. If somewhere in between two station 1 km of the trake be under repair and the speed limit for this part be 20 kmph, how late will the train be running on account of this repair work, assuming that the train would have been on time otherwise ?

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A train takes 2 minutes to acquire its full speed 60 kph from rest and 1 minute to come to rest from the full speed. If some where in between two stations 1 km of the track be under repair and the limited speed on this part be fixed to 20 kph, find the late running of the train on account of this repair work, assuming otherwise normal at running of the train between the stations.

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