A 600 metres long train can cross a 1200 metres long platform in 36 seconds. In how much time(in seconds) can it cross a bridge 2200 metres long?

56

We know ,

Speed = \(\frac{Distance }{Time}\)

Speed of train = \(\frac{600 + 1200}{36}\) = 50 m/sec

Now , Time taken by train to cross 2200 m long bridge

= \(\frac{600 + 2200}{50}\)

= 56 m/sec

So , 2200 m bridge is cross the bridge in 56 sec