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 ?  Choose the correct option.
A) 42	B) 50	C) 30	D) 28	E) 26
Explanation:   Distance = 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: Option 30
<result>C</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 ?