AMC 8 1996 Problem 18
AMC8 1996 年第 18 题
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Ana's monthly salary was $2000 in May. In June she received a 20% raise. In July she received a 20% pay cut. After the two changes in June and July, Ana's monthly salary was
Ana 五月份的月薪是 $2000。六月份她获得了 20% 的加薪。七月份她的薪水被削减了 20%。经过六月和七月的两次变动后，Ana 的月薪是
- A. / 1920 美元
- B. / 1980 美元
- C. / 2000 美元
- D. / 2020 美元
- E. / 2040 美元
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
Notice that a 20% raise translates to Ana's monthly salary multiplied by (100 + 20)% = 120%, and a 20% pay cut translates to her salary multiplied by 100% - 20% = 80%, so
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