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The average speed of a train, including stoppages was 40 kms/hr and excluding stoppages, it was 50 kms/hr. How many minutes per hour did the train stop?

The average speed of a train, including stoppages was 40 kms/hr and excluding stoppages, it was 50 kms/hr. How many minutes per hour did the train stop? Correct Answer 12

Speed without stoppage = 50 km/hr

Speed with stoppage = 40 km/hr

Minutes per hour train stop = × 60 = 12 min

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