Question

Tom 的帽子店把所有原价都提高了 $25\%$ 。现在商店促销，所有商品在提高后的价格基础上再降低 $20\%$ 。下面哪句话最能描述一件商品的促销价？

Tom's Hat Shoppe increased all original prices by $25\%.$ Now the shoppe is having a sale where all prices are $20\%$ off these increased prices. Which statement best describes the sale price of an item?

促销价比原价高 $5\%$

The sale price is $5\%$ higher than the original price.

促销价高于原价，但高出不到 $5\%$ 。

The sale price is higher than the original price, but by less than $5\%.$

促销价高于原价，但高出超过 $5\%$ 。

The sale price is higher than the original price, but by more than $5\%.$

促销价低于原价。

The sale price is lower than the original price.

促销价与原价相同。

The sale price is the same as the original price.

答案：E

知识点：百分数

难度评级：1060

解答：

提价 $25\%$ 会把价格乘以 $1.25$ ，然后打 $20\%$ 折扣会乘以 $0.80$ 。

总体因数是 $1.25 \times 0.80 = 1.00$ ，所以促销价等于原价。

所以正确答案是 E。

Increasing by $25\%$ multiplies the price by $1.25,$ and then taking $20\%$ off multiplies by $0.80.$

The overall factor is $1.25 \times 0.80 = 1.00,$ so the sale price equals the original price.

Thus, the correct answer is E .

1988 AMC 8 第 22 题

答案：E

难度评级：1060

解答：

其他年份的第 22 题