A 250 metre long train takes 30 seconds to cross a 350 metres long bridge. How much time train will take to cross a 550 metre long bridge?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 40 seconds.
| Understanding/Application |
|
Length of the train = 250 m Length of the first bridge = 350 m Total distance to be travelled to cross the bridge = 250 + 350 = 600 m Speed = Distance/Time Speed of train = 600/30 = 20 m/sec |
|
Length of the second bridge = 550 m Total distance = 550 + 250 = 800 m Speed = 800/20 = 40 m/sec |