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A man who undertakes a journey covers one third of his journey at a speed of 60 kmph and the next one third at 30 kmph and the next one third at 30 kmph and the last part at 10 kmph.What is the average speed of his journey? ?->(Show Answer!)
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1. A man who undertakes a journey covers one third of his journey at a speed of 60 kmph and the next one third at 30 kmph and the next one third at 30 kmph and the last part at 10 kmph.What is the average speed of his journey?





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