Answer : 2 37.33 sec Explanation : Answer: B) 37.33 sec Explanation: Speed = 108 km/hrenter a tunnel,, means that the train covers a distance equal to its own lengthso (108 x 5/18) = x/4 where x= length of trainhence x = 120 mtrsto pass completely train has to travel a distance = (x tunnel length) that is 1120 mtrs.so (1120/t) = (108x5/18)t = 37.33 sec

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