How many seconds will a 400 metre long train take to cross a man running with a speed of 6 km/hr in the direction of the moving train if the speed of the train is 30 km/hr? Select the correct option.
A) 25
B) 30
C) 45
D) 64
E) 60
Explanation :   Speed of train relatively to man = ( 30 - 6)km/hr   = 24 km /hr   = (24 x 5 / 18)m/sec   = 6.66 m/sec   Time taken to pass the man = (400/ 6.66)sec = 60 sec.   Answer : 60
<result>E</result>
How many seconds will a 400 metre long train take to cross a man running with a speed of 6 km/hr in the direction of the moving train if the speed of the train is 30 km/hr?