涛涛数学2-Ｑ９

涛涛数学2-Ｑ９

What was the price at which a merchant sold a certain appliance?

(1)   The merchant’s gross profit on the appliance was 20 percent of the price at which the merchant sold the appliance.

(2)   The price at which the merchant sold the appliance was $50 more than the merchant’s cost of the appliance.

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.

一直对ＤＳ题很迷糊，这题答案是E 我选的是C  请教~　

还有涛涛数学和ＧＷＤ３１套的是不是一样的呢？　难度怎么样？是不是涛涛数学有些简单呢？

自己顶上~~

没有人能回答么 。。。

答案是C

那那。。。这个算不算是常识呢？