Mathematics, 13.03.2021 05:30 ianmartin6080

If the mean of 20 items is 40 another 30 items is 60 what is the mean of whole set

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If the mean of 20 items is 40 another 30 items is 60 what is the mean of whole set ...

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If the mean of 20 items is 40 another 30 items is 60 what is the mean of whole set ​

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If the mean of 20 items is 40 another 30 items is 60 what is the mean of whole set