In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hour ?

In what time will a train 100 metres long cross an electric pole, if i

1.	In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hour ?
A.	2.5 seconds
B.	5 seconds
C.	12.5 seconds
D.	<table><tr><td rowspan="2">3</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>5</center></td><td rowspan="2">seconds</td></tr><tr><td style="text-align: center;">4</td></tr></table>
Answer» B. 5 seconds

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In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hour ?

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