Q34:

If Antonio bought two half-gallon cartons of ice cream during a special sale, what percent of the total regular price of the two cartons did he save?

(1)    Antonio paid the regular price for the first carton and received the second carton for half the regular price.

(2)    The regular price of the ice cream Antonio bought was $4.00 per half-gallon carton.

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A?

我觉得有问题,题目中没有说Antonio买的那2盒ice cream是一样的.所以设前一个x刀,后面那个y刀.

(1)=>Antonio花了x+0.5y刀,即节省了0.5y刀. 所求比例是0.5y/(x+y),求不出

(2)=>如果理解为x=4那么该题选E,如果理解为x=y=4,那么该题选C

原答案A是基于assumption"x=y"的,逻辑有问题.

都没问题吗?

那就开导开导我吧!