a train passes a platform 150 metre long in 15 second and a boy standing on the platform in 5 seconds. Then the speed of the train is?
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Answer:
Total length. = 150m+200m = 350m
Speed of the train. = 350/15 m/s
Speed in kmph = (350/15) * 3600 = 350 * 240 = 84000
Speed = 84 km per hour
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