[求助]GWD 9-12 seems no discussion before..

ilovecushi

Q12:
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 the sale the price of a book was $1.45 more than the price of a magazine.
(2) At the 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.
Answer:

the answer is b, but i think its E...

b=book, m=magazine, t=total

3b+4m=t

(1)b=m+1.45

(2)6b+8m=43.70

3 unknown no with 2 equaion. so cannot get the answer..

not sure whether my 大腦短路~~  牛牛哥 牛牛姐 來看看吧~~

lisy

3b+4m=t

(1)b=m+1.45

(2)6b+8m=43.70

3b+4m＝1/26b+8m=43.7080.5这不就有答案了吗

ilovecushi

哈哈 真的是大腦短路了

謝謝~

ashura

那正确答案应该是C吧？