pp-T2-147

[gman]

If a certain company purchased computers at $2,000 each and printers at $300 each, how many computers did it purchase?

(1) More than three printers were purchased.

(2) The total amount for the purchase of the computers and the printers was $15,000.

ans: E

我想不透的點是 B 列出的公式是 設電腦買c台 印表機買 p台 ==>
2000c+300p=15000 推出來 computer 3台 印表機 30台
so the company purchased 3 computers. B sufficient?

我到底漏看了什麼嗎

[Huang Hsin-Yi]

因為根據你的公式

也有可能是computer 6台 printer 10台
(1)(2) also insufficient

Ans:E

[gman]

感恩
人腦袋有時就是會塞住....謝謝你的回答