How many seconds will a 450 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 60 km/hr?
Choose the correct choice from the following:
A) 25 B) 30 C) 40 D) 45 E) 60
Explanation :   Speed of train relatively to man = ( 60 - 6)km/hr   = 54 km /hr   = (54 x 5 / 18)m/sec   = 15 m/sec   Time taken to pass the man = (450 / 15)= 
<gadget id="calculator">(450 / 15)</gadget>
<output>30</output>
30 sec.   Answer : 30
<result>B</result>
How many seconds will a 450 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 60 km/hr?