A 440 m long train is running at 240 km/h. In what tie will

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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 ?

1. 9 s
2. 6 s
3. 12 s
4. 4 s
5. None of the above

Correct Option: B

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