请问GWD17-13

chichiT

Q13:

Juan bought some paperback books that cost $8 each and some hardcover books that cost $25 each.  If Juan bought more than 10 paperback books, how many hardcover books did he buy?

(1)       The total cost of the hardcover books that Juan bought was at least $150.

(2)       The total cost of all the books that Juan bought was less than $260.

                  

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.

我怎样算都觉得是E啊！可是答案是C，是我那边搞错了吗？谢谢

高棉的微笑

http://forum.chasedream.com/dispbbs.asp?BoardID=22&ID=142733

C is right

[此贴子已经被作者于2005-12-20 2:01:29编辑过]

charmant

这种题一定要注意的一点就是，很可能利用题目所给的取值范围，还有总价值能是单价的整数倍求解。所有价格的题基本上都有这种思路