A Trains 225 meters long running at the speed of 72 km/hr and crossed a 275 meters long platform. How much time will it take to cross platform?

A Trains 225 meters long running at the speed of 72 km/hr and crossed a 275 meters long platform. How much time will it take to cross platform?

1). 28 sec
2). 22 sec 
3). 25 sec
4). 30 sec

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