AMC 8 2001 Problem 10
AMC8 2001 年第 10 题
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A collector offers to buy state quarters for 2000% of their face value. At that rate how much will Bryden get for his four state quarters?
一位收藏家提出以面值的 2000％购买州政府发行的 25 美分硬币。按这个价格，Bryden 的 4 枚这样的 25 美分硬币能卖到多少钱？
- A. / 20 美元
- B. / 50 美元
- C. / 200 美元
- D. / 500 美元
- E. / 2000 美元
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
2000% is equivalent to 20×100%. Therefore, 2000% of a number is the same as 20 times that number. 4 quarters is 1 dollar, so Bryden will get dollars, .
Since 2000% is just , we can multiply that by 100, because four quarters is a 100 cents. After the multiplication, we get 2000. Since our answer is in cents right now, we need to convert it to dollars, which would be dollars.
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