In what time will a train 110 m long cross an electric pole, it its speed be 128 km/hr?	Choose one.
A) 2.5 sec B) 2.9 sec C) 3.1 sec D) 8.7 sec E) 8.5 sec
Speed = 128 * 5/18 = 36 m/sec   Time taken = 110/36 = 3.1 sec.   Answer: 3.1 sec
<result>C</result>
In what time will a train 110 m long cross an electric pole, it its speed be 128 km/hr?