In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hr? Select:
A) 2.5 sec	B) 4.25 Sec	C) 5 sec	D) 12.5 sec	E) None
Solution   Speed	= (144 x 5 /18) m/sec   = 40 m / sec   Time taken	= (100 /40)= 
<gadget id="calculator">(100 /40)</gadget>
<output>5/2 = around 2.5</output>
2.5 sec.   2.5 secnswer 2.5 sec
<result>A</result>
In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hr?