Each Type A machine fills 400 cans per minute, each Type B machine fills 600 cans per minute, and each Type C machine installs 2,400 lids per minute. A lid is installed on each can that is filled and on no can that is not filled. For a particular minute, what is the total number of machines working?

(1) A total of 4,800 cans are filled that minute.

(2) For that minutes, there are 2 Type B machines working for every Type C machine working

A:Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B:Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C:BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D:EACH statement ALONE is sufficient.

E:Statements (1) and (2) TOGETHER are NOT sufficient.

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正确答案： C:BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

lid 盖子，can罐子。 A机器 400个罐子，B机器600 个罐子，c 安装24000个盖子。 1）4800，分配到a和b。可能是2a+2b，也可能是5a+3b，也就是可以4台也可以8台，所以us 2）每一个c配2a，总量不确定，b不确定，us 1）+2）总量4800，c因为完全1台可以，所以a确定2台，剩下的就是（4800-800）／600就是b的了。s