A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

5 sec
6 sec
7 sec
10 sec

Correct Answer: 6 sec

Explanation:

Speed of train relative to man = (60 + 6) km/hr = 66 km/hr.

=	❨	66 x	5	❩m/sec
			18

=	❨	55	❩m/sec.
		3

∴ Time taken to pass the man =	❨	110 x	3	❩sec = 6 sec.
			55

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