A train 200 m long is running with a speed of 72 km/hr. In what time will it pass a platform 160 m long?

18 sec
21 sec
15 sec
20 sec

Correct Answer: 18 sec

Explanation:

Distance covered = 200 + 160 = 360.
Speed of train = 72 km = 72 x (5/18) = 20 sec.
Time = 360 / 20 = 18 sec.

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