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Answer : 4 6 hrs 28 min Explanation : Answer: D) 6 hrs 28 min Explanation: Time taken to cover 600 km = 600/100 = 6 hrs.Number of stoppages = 600/75 - 1 = 7Total time of stoppages = 4 x 7 = 28 minHence, total time taken = 6 hrs 28 min.

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