Mathematics, 26.06.2020 22:01, Kelbee781

The average age of the ten people on my basketball team was 13.5, but then a 15-year-old joined our team and an 11-year-old quit the team. What is the average age of my team now?

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The average age of the ten people on my basketball team was 13.5, but then a 15-year-old joined our...