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题目内容双击单词支持查询和收藏哦～
Today a certain machine is worth 20 percent less than it was worth a year ago, and it is worth x percent less than it was worth two years ago. A year ago the machine was worth 20 percent less than it was worth two years ago.
Quantity A
x
Quantity B
40
B显示答案
· 相关考点
2.4.2 百分比多少关系的描述
2.4.2 百分比多少关系的描述
以上解析由 考满分老师提供。
