In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?	Select:	A) 2.5	B) 3	C) 4	D) 5	E) 6
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 120/40= 
<gadget id="calculator">120/40</gadget>
<output>3</output>
3 sec.   Answer: Option 3
<result>B</result>
In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?