In what time will a train 50 m long cross an electric pole, it its speed be 144 km/hr? Choose the correct answer:
A) 1.25 sec B) 2.75 sec C) 3.5 sec D) 2.39 sec E) 9.5 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 50/40= 
<gadget id="calculator">50/40</gadget>
<output>5/4 = around 1.25</output>
1.25 sec.   1.25 secnswer: 1.25 sec
<result>A</result>
In what time will a train 50 m long cross an electric pole, it its speed be 144 km/hr?