a train of length 150 meter cross a man in 6 second, who runs at speed of 6km/hr. train speed?

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Your Answer

Let the speed of the train be x km/hr
Relative speed = (x+6) km/hr = [(x+6)×5/18][(x+6)×518] m/sec
150/6=(x+6)×5/18 or 5x+30=450 or x = 84 km/hr

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