A 440 m long train is running at 240 km/h. In what tie will it pass a man running in the direction opposite to that of the train at 24 km/h?

9 s
6 s
12 s
4 s

Correct Answer: 6 s

Explanation:

Speed of the train relative to man
= (240 + 24) km/h = 264 km/h
= 264 x (5/18) m/s = 220/3 m/s
Distance covered in passing the man = 440 m
∴ Time taken = (440/220) x 3 = 6 s

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