Question

A train crosses a man and a platform that is 480 meters long in 12 seconds and 36 seconds, respectively. Given this information, calculate the speed of the train. Consider that when the train crosses a man, it only covers its own length, while when crossing the platform, it must cover both its length and the length of the platform. What will be the speed of the train in meters per second?

A 70 km/h
B 72 km/h
C 75 km/h
D 78 km/h
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