12. 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.
答案A
請問條件(1)是 2C>2J-5還是 2J>2C>5? 謝謝
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