这道数学题有简单的方法吗?

scorpio2rd

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.

答案是B.

我是满满的的试出来的...知道只有一组可能性...

有没有简单的办法知道到底是一组解还是多组..考试的时候实在没有时间呀...尤其还是有小数的....谢谢

dido212

提干问the price of 3 books and 4 magazines

（2）中的the price of 6 books and 8 magazines was $43.70.书的数量刚好是问题的2倍

所以除以2就是the price of 3 books and 4 magazines 了