标题: OG11-黃DS74 college graduates=master ? [打印本页] 作者: Kath1985 时间: 2010-3-25 19:34 标题: OG11-黃DS74 college graduates=master ? 50 % of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 % of those over 40 have master's degrees, how many of the employees over 40 have master's degrees ? 1. Exactly 100 of the employees are college graduates 2. of the employees 40 years old or less, 25 % have master's degrees. 答案A 想問 1我畫的圖都不對 請問該怎麼改 才符合題目描述的集合圖 ? 2 college graduates 就是指 master's degrees 嗎 ? [attachimg=720,450]76322[/attachimg]作者: nycxiaoqiu 时间: 2010-3-26 02:05
两张都不是,college graduate 包括了master degree但还有部分不是..作者: Kath1985 时间: 2010-3-29 21:35
先感謝 nycxiaoqiu 但仍有疑問 "college graduate 包括了master degree但还有部分不是" 看不懂意思 是指 college graduate是master 對吧 ?.作者: Kath1985 时间: 2010-3-30 20:26
