Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: a train is 460 meter long is running at a speed of 45 km / hour . in what time will it pass a bridge of 140 meter length
48 seconds
1 minute and 12 seconds.