[問題]GWD30-24

[magic]

Q24:
By what percent was the price of a certain television set discounted for a sale?
(1)The price of the television set before it was discounted for the sale was 25 percent greater than the discounted price.
(2) The price of the television set was discounted by $60 for the sale.
答案是A
請問這題題目我看不大懂
能請大大們教一下嗎

[Kyo]

題目是問電視組打幾折。

A說電視組的售價比打折之前貴25%，那就是說打了75折囉。

B只知道便宜60元，不知道原價，所以就不知道打幾折。

[elfgoer]

(1) 應該是說原價(p)比折扣後的價格(d)貴了25%, 則按照(1)給的條件可以列式: p=1.25d
所以d/1.25d=0.8, 也就是折扣後的價格是原價的80%,打8折,而不是樓上說的75折