In what time will a train 60 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) 2.8 sec  C) 7.5 sec  D) 2.3 sec  E) 1.5 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 60/40= 
<gadget id="calculator">60/40</gadget>
<output>3/2 = around 1.5</output>
1.5 sec.   Answer:1.5 sec
<result>E</result>
In what time will a train 60 m long cross an electric pole, it its speed be 144 km/hr?