A bullet train 160 m long is running with a speed of 70 kmph. In what time will it pass a man who is running at 8 kmph in the direction opposite to that in which the bullet train is going?	Options:	A) 23 sec	B) 15 sec	C) 7.38 sec	D) 6.92 sec	E) 16 sec
C   7.38 sec   Speed of the bullet train relative to man = (70 + 8)= 
<gadget id="calculator">(70 + 8)</gadget>
<output>78</output>
78*5/18 m/sec= 65/3 m/sec.   Time taken by the bullet train to cross the man = Time taken by it to cover 160 m at (65/3) m / sec   = (160 *3/65) sec = 7.38 sec
<result>C</result>
A bullet train 160 m long is running with a speed of 70 kmph. In what time will it pass a man who is running at 8 kmph in the direction opposite to that in which the bullet train is going?