A train 200 meters long is running at a speed of 20 meters per second. In how much time (in seconds) will it cross a bridge which is 400 meters long?

A train 200 meters long is running at a speed of 20 meters per second.

1.	A train 200 meters long is running at a speed of 20 meters per second. In how much time (in seconds) will it cross a bridge which is 400 meters long?
A.	20
B.	25
C.	30
D.	60
Answer» D. 60

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A train 200 meters long is running at a speed of 20 meters per second. In how much time (in seconds) will it cross a bridge which is 400 meters long?

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