one-third of a certain journey was covered at the rate of 25kmph, one-fourth at the rate of 30 kmph and the rest of the 30 kmph. what is the average speed per hour for whole journey
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one-third of a certain journey was covered at the rate of 25kmph, one-fourth at the rate of 30 kmph and the rest of the 30 kmph. what is the average speed per hour for whole journey
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Answer:
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