In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?
Choose one:
A) 3 sec	B) 2.9 sec	C) 3.5 sec	D) 7.5 sec	E) 2.4 sec
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.   3 secnswer: 3 sec
<result>A</result>
In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?