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A train 550 metres long is running with a speed of 55 km per hour. In what time will it pass a signal post?

30 sec
24 sec
42 sec
36 sec

Correct Answer: 36 sec

Explanation:

Distance covered = 550 meter. = 0.55 km
Speed of the train = 55 km/hr
So time taken = 0.55 / 55 =1/100 hr = (60 x 60 )/100 sec = 36 sec

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