Passing of a train I

A passenger train of length L = 120 m L=\text{120 m} travels at a speed of v = 30 km/h v=\text{30 km/h} . How long (in seconds) doe0s it take the train to pass a platform of length d = 50 m d=\text{50 m} ?

4 20.4 We can't say. 6.8 7.9 21.4 60 120

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