How many seconds will a 500 meter long train moving with a speed of 63 km/hr, take to cross a man walking with a speed of 3 km/hr in the direction of the train ? Options:
A) 15s  B) 20s  C) 25s  D) 30s  E) 35s
30sistance = 500m   Speed = 63 -3 km/hr = 60 km/hr = 600/36 m/s = 50/3 m/s   Time taken = distance/speed = 500/(50/3)= 
<gadget id="calculator">500/(50/3)</gadget>
<output>30</output>
30 s   Answer is 30s.
<result>D</result>
How many seconds will a 500 meter long train moving with a speed of 63 km/hr, take to cross a man walking with a speed of 3 km/hr in the direction of the train ?