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Q: In what time will a train 100 metres long cross an electric pole, if its speed is 144 kmph?
A. 2.5 sec    B. 4.25 sec   
C. 5 sec    D. 12.5 sec

Answer and Explanation

Answer:2.5 sec   

Explanation:
Speed = (144 * 5/18) = 40 m/sec
Time taken = 100/40 = 2.5 sec

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