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John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back......

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John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

posted Jul 3, 2023 by Rahul Vaidya

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