How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

Answer: Option B

Explanation:

Speed of the train relative to man

= (63 - 3) km/hr

= 60 km/hr

=		60 x	5		m/sec
			18

=		50		m/sec.
		3

Time taken to pass the man

=		500 x	3		sec
			50

= 30 sec.