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题目内容双击单词支持查询和收藏哦～
Three factory employees work at constant rates to produce DVDs. Employee A produces y DVDs in $$\frac{2}{5}$$ of an hour. Employee B produces y DVDs in $$\frac{3}{5}$$of an hour. Employee C produces y DVDs in $$\frac{5}{4}$$ of an hour. Which of the following combinations of employees can produce at least 5y DVDs in 2 hours? Indicate all such statements.
A,D,F显示答案
以上解析由 考满分老师提供。
