Question
Two boys A and B are running in the same direction at 6 km/h and 3 km/h, respectively. A is behind and B is some distance ahead of him. A train travelling at 54 km/h is coming from behind and the three of them come in such a position where B is at the head and A at the tail of the train. When the boys meet, the tail of the train is 320 meters away. What is the length of the train?
Solution
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