GWD22-Q27

eleine

这道题好像和INTEGER没有关系吧。

题目问： the price of 3 books and 4 magazines at the sale

B At sale the price of 6 books and 8 magazines was $43.70

除以2不就是 3books and 4 magazines的Prices 嘛。。

kevin_chee20

我觉得应该是C才对。如果是要求价格是integers,应该在条件中说明。

即使这道题要求价格是integers, 认为 B 正确，那B中的X、Y有好多组合。所以，还是满足不了解题要求。

zmai

請教NN們

GWD22-Q27

At a sale all books were priced equally and all magazines were priced equally.  What was the price of 3 books and 4 magazines at the sale?

(1)
                At sale the price of a book was $1.45 more than the price of a magazine.

(2)
                At sale the price of 6 books and 8 magazines was $43.70.

                  

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B.是不是這種有小數的題﹐ 6X+8Y=43.7, X, Y 的值一定是固定的? 我之前在GWD6-Q30 有類似題﹐可是等式是0.15X+0.29Y=4.40. 後者因為書本是一定要整數﹐所以X﹐Y 值固定. 可是這題價格可以是小數啊﹐那就可以有多個組合了?