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[Data Sufficiency]
试题详情
题目：
During a 10-week summer vacation, was the average (arithmetic mean) number of books that Carolyn read per week greater than the average number of books that Jacob read per week?
(1) Twice the average number of books that Carolyn read per week was greater than 5 less than twice the average number of books that Jacob read per week.
(2) During the last 5 weeks of the vacation, Carolyn read a total of 3 books more than Jacob.
选项:
答案:
E
提问：
这个题目，主要是第一个条件，我是这么理解的2倍的C在10个星期内读的书大于5本，且小于2倍的J在10个星期内读的书，所以我就选了A，但是博小智解释说是2c-5大于2j，不知道这个是怎么根据文字得来的？
解答：
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阅读1924
提问：
这个题目，主要是第一个条件，我是这么理解的2倍的C在10个星期内读的书大于5本，且小于2倍的J在10个星期内读的书，所以我就选了A，但是博小智解释说是2c-5大于2j，不知道这个是怎么根据文字得来的？
解答：
点赞2
阅读1925
提问：
(1) Twice the average number of books that Carolyn read per week was greater than 5 less than twice the average number of books that Jacob read per week.怎么理解？
解答：
点赞0
阅读1845
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