Question

Lou's Fine Shoes 生意有点慢，于是 Lou 决定促销。星期五，Lou 将星期四所有价格提高 $10 \%$ 。周末，Lou 做广告：“标价九折，促销星期一开始。”星期四售价 $\$40$ 的一双鞋，星期一卖多少钱？

Business is a little slow at Lou's Fine Shoes, so Lou decides to have a sale. On Friday, Lou increases all of Thursday's prices by $10 \%.$ Over the weekend, Lou advertises the sale: "Ten percent off the listed price. Sale starts Monday." How much does a pair of shoes cost on Monday that cost $\$40$ on Thursday?

$\$36$

$\$39.60$

$\$40$

$\$40.40$

$\$44$

答案：B

知识点：百分数

难度评级：1060

解答：

星期五鞋价提高 $10\%$ ，所以标价变为 $40\cdot1.10=44$ 美元。

星期一再打 $10\%$ 的折扣，从 $\$44$ 降到 $44\cdot0.90=39.60$ 美元。

所以正确答案是 B。

On Friday, the shoes are marked up by $10\%$ , so the listed price becomes $40\cdot1.10=44$ dollars.

On Monday, the $10\%$ discount is taken from $\$44$ , giving $44\cdot0.90=39.60$ dollars.

Thus, B is the correct answer.

2003 AMC 8 第 11 题

答案：B

难度评级：1060

解答：

其他年份的第 11 题