A train 440 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 ? Choose the correct choice from the following choices:
A) 5 sec  B) 6 sec  C) 7 sec  D) 24 sec  E) None
Solution   Speed of train relative to man =(60+6) km/hr= 66km/hr   =(66x5/18) m/sec =(55/3) m/sec   ∴ Time taken to pass the man = (440 x 3/55)sec = 24 sec   Answer 24 sec
<result>D</result>
A train 440 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 ?