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A total of 22 men and 26 women were at a party, and the average (arithmetic mean) age of all of the adults at the party was exactly 35 years. If the average age of the men was exactly 38 years, which of the following was closest to the average age, in years, of the women?
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当前版本由 感觉自己萌萌哒 更新于2015-12-01 11:41:10 感谢由 感觉自己萌萌哒 对此题目的解答所做出的贡献。题目：一个聚会上有22个男性和26个女性，已知所有人的平均年龄为35岁，其中男性的平均年龄为38岁，问女性的平均年龄接近下列哪项？
解：聚会所有人总年龄为（22+26）*35=1680（岁），男性总年龄为22*38=836（岁），因此女性平均年龄为（1680-836）/26≈32.5(岁)
（35*48-22*38）/26约等于32.46，接近32.5
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