Mathematics, 17.03.2021 23:40 wendelljo61

The average of 15 test scores is 80. If the average of first eight test scores is 65 and that of the last eight test scores is 70, then the eighth score is 80. True or False?

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The average of 15 test scores is 80. If the average of first eight test scores is 65 and that of the...

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