Question

The length of a train is 200 metres. If the speed of the train is 15 m/s, then how much time (in seconds) will it take to cross a bridge 520 metres long?

• A. 24
• B. 48
• C. 72
• D. 54

Answer 1

Answer:

B. 48

Solution:

Given:

Speed of train = 15 m/s

The length of train = 200 metres

And length of bridge = 520 metres

Calculation:

Total distance covered while passing bridge = 200 + 520 = 720 metres

Speed = Distance/Time

Time = Distance/Speed $=\frac{720}{15}$= 48 seconds

∴ The time taken by him to cross a bridge 520 m long is 48 (in seconds).