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The 20 numbers in list A have an average of 9.5. The 10 numbers in list B have an average of 8.3. If the two

The 20 numbers in list A have an average of 9.5. The 10 numbers in list B have an average of 8.3. If the two lists are combined to make a new list, what is the average of the 30 numbers in the new list?

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