→ gobears5566 : 感謝樓上，所以這樣看來，ETS官方也是說 AB 07/03 23:38
→ gobears5566 : 這樣是那位老師解錯囉？ 07/03 23:38
→ AImau : 老師將題目看成"could NOT be"，因此答案應該是AB 07/04 09:12
→ AImau : 感謝同學發問及偵錯 07/04 09:13
→ AImau : 下課時有同學去問老師，來不及更改同學已離開 07/04 09:15
Each employee of a certain company is in either Department X or Department Y,
and there are more than twice as many employees
in Department X as in Department Y.
The average (arithmetic mean) salary is $25,000
for the employees in Department X
and $35,000 for the employees in Department Y.
Which of the following amounts could be the average salary
for all of the employees of the company?
Indicate all such amounts.
(A) $26,000
(B) $28,000
(C) $29,000
(D) $30,000
(E) $31,000
(F) $32,000
(G) $34,000
今天晚上去聽創勝文教 NTE 的免費講座，
老師講解這題時說答案是 CDEFG，課上有同學回答是 AB，但被老師說錯。
我自己算也是算 AB，不知是否有板友能解答究竟為何是 CDEFG，感謝！
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