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标题: math 求助 [打印本页]

作者: braveMBA 时间: 2006-1-16 20:36 标题: math 求助

Tom, Jane, and Sue each purchased a new house. The average (arithmetic mean) price of the three houses was $120,000. What was the median price of the three houses?

(1) The price of Tom’s house was $110,000.

(2) The price of Jane’s house was $120,000.

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.

答案是C，我觉得是B

作者: leadership 时间: 2006-1-17 07:34

是c呀，b和a没区别的!!

作者: braveMBA 时间: 2006-1-17 19:25

谢谢你。可是你不觉只知道2就可以了吗？三者总和等于360000，其中一个为120000，另两个之和就变成240000，肯定一个大于120000，一个小于，所以median price就是120000。不知道这么想对不对!!

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