In what time will a train 100 m long cross an electric pole, it its speed be 144 km/hr?  Choose the correct answer
A) 2.5	B) 2.9	C) 2.6	D) 2.1	E) 2.2
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 100/40= 
<gadget id="calculator">100/40</gadget>
<output>5/2 = around 2.5</output>
2.5 sec.   2.5nswer:2.5
<result>A</result>
In what time will a train 100 m long cross an electric pole, it its speed be 144 km/hr?