Mathematics, 25.01.2021 16:00, zanaplen27

The scores of the first 6 competitors in a contest have a mean of 28 points
When the 7th competitor is included the
mean decreases to 27 points.
How many points did the 7th competitor
score?

Answers: 1

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The scores of the first 6 competitors in a contest have a mean of 28 points
When the 7th comp...