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Each player in a certain chess tournament is categorized as either amateur or expert, and each player is given a rating as a number of points. The average (arithmetic mean) rating of the expert players is 2,050 points, and the average rating of all the players is 1,900 points. If $$\frac{3}{5}$$ of the players are expert players, what is the average rating of the amateur players?
A显示答案
· 相关考点
2.1.1 分数的加减乘除运算
以上解析由 考满分老师提供。
