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题目内容双击单词支持查询和收藏哦～
Machine K, working alone at its constant rate, produces 100 units of product Z in 2 hours. Machine L, working alone at its constant rate, produces 100 units of product Z in 3 hours. Machine M, working alone at its constant rate, produces 100 units of product Z in 4 hours.
Quantity A
The amount of time that it takes machines K, L, and M, working simultaneously at their respective constant rates, to produce 100 units of product Z
Quantity B
1 hour
B显示答案
· 相关考点
2.5.2 工作效率题
2.5.2 工作效率题
以上解析由 考满分老师提供。
