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题库 / Prep2007E2-DS-160
All the clients that Company X had at the beginning of last year remained with the company for the whole year. If Company X acquired new clients during the year, what was the ratio of the number of clients that Company X had at the end of last year to the number of clients that it had at the beginning of last year?
(1) The ratio of the number of clients that Company X had at the beginning of last year to the number of new clients that it acquired during the year was 12 to 1.
(2) Company X had 144 clients at the beginning of last year.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
设X公司一开始有N个客户，这N个客户在这一年结束的时候还在，如果这一年还入了新的客户，设新客户M，那么年底的客户量是N+M
问：（N+M） / N=？
条件1：N：M=12:1 12M=N 可以算出（N+M） / N sufficient
条件2：N=144 不知道M insufficient
选A
不能怀疑gmat粑粑，那就是获得了的人，要是中途走了，就不算获得了
Company X acquired new clients during the year，题目也没有说获得新的员工会不会在年底之前离开公司？