A bullet train 200 m long is running with a speed of 69 kmph. In what time will it pass a man who is running at 3 kmph in the direction opposite to that in which the bullet train is going?  Choose the correct choice from the following answers:
A) 10 sec B) 15 sec C) 12 sec D) 11 sec E) 16 sec
A   10 sec   Speed of the bullet train relative to man = (69 + 3)= 
<gadget id="calculator">(69 + 3)</gadget>
<output>72</output>
72 *5/18 m/sec= 60/3 m/sec.   Time taken by the bullet train to cross the man = Time taken by it to cover 200 m at (60/3) m / sec   = (200*3/60)= 
<gadget id="calculator">(200*3/60)</gadget>
<output>10</output>
10 sec
<result>A</result>
A bullet train 200 m long is running with a speed of 69 kmph. In what time will it pass a man who is running at 3 kmph in the direction opposite to that in which the bullet train is going?