SOLUTION: the average of the first 4 numbers was 13. the average of the next 6 numbers was 21. what was the overall average of the 10 numbers

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Question 936518: the average of the first 4 numbers was 13. the average of the next 6 numbers was 21. what was the overall average of the 10 numbers
Answer by reviewermath(1029) About Me  (Show Source):
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The average of the first 4 numbers was 13. the average of the next 6 numbers was 21. what was the overall average of the 10 numbers.
Solution:
average = %284%2A13+%2B+6%2A21%29%2F10 = highlight%2817.8%29