A 820 m long train is running at 126 km/h. In how much time will it cross a tunnel which is 580 m long?

A 820 m long train is running at 126 km/h. In how much time will it

1.	A 820 m long train is running at 126 km/h. In how much time will it cross a tunnel which is 580 m long?
A.	40s
B.	25s
C.	35s
D.	45s
Answer» B. 25s

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A 820 m long train is running at 126 km/h. In how much time will it cross a tunnel which is 580 m long?

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