In what time will a train 150 m long cross an electric pole, it its speed be 144 km/hr?	Choose the correct choice from the following options: A) 2.5 sec B) 1.9 sec C) 3.8 sec D) 6.9 sec E) 2.9 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 150/40   = 3.8 sec.   Answer: 3.8 sec
<result>C</result>
In what time will a train 150 m long cross an electric pole, it its speed be 144 km/hr?