Question
A train 180 meters long passes a man walking in the same
direction at 6 km/h in 15 seconds. What is the speed of the train?Solution
Speed of the train relative to the man = Distance / Time = 180 / 15 = 12 m/s. Convert to km/h: 12 × 18/5 = 43.2 km/h. Speed of the train = Speed relative + Speed of man = 43.2 + 6 = 49.2 km/h. Correct option: c
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