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题目内容双击单词支持查询和收藏哦～
Each copy of Magazine X is sold either at the cover price of $3.25 per copy or at the subscription price of $1.75 per copy. The average (arithmetic mean) price of the copies of Magazine X that were sold last month was $2.25 per copy.
Quantity A
The number of copies of Magazine X that were sold last month at the subscription price
Quantity B
Twice the number of copies of Magazine X that were sold last month at the cover price
C显示答案
· 相关考点
3.3.2 解二元一次方程组与相关应用题
3.3.2 解二元一次方程组与相关应用题
以上解析由 考满分老师提供。
