In what time will a train 130 m long cross an electric pole, it its speed be 144 km/hr? Select:
A) 2.5 sec
B) 3.25 sec
C) 5 sec
D) 12.5 sec
E) 6 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 130/40= 
<gadget id="calculator">130/40</gadget>
<output>13/4 = around 3.25</output>
3.25 sec.   ANSWER:3.25 sec
<result>B</result>
In what time will a train 130 m long cross an electric pole, it its speed be 144 km/hr?