A train crosses a platform in 30 seconds travelling with a speed of 72 km/hr. If the length of the train be 120 metres, then what will be the length (in metres) of the platform?
1
320
2
450
3
480
4
360
A train crosses a platform in 30 seconds travelling with a speed of 72 km/hr. If the length of the train be 120 metres, then what will be the length (in metres) of the platform?