AMC 8 2008 Problem 9
AMC8 2008 年第 9 题
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In 2005 Tycoon Tammy invested 100 dollars for two years. During the first year her investment suffered a 15% loss, but during the second year the remaining investment showed a 20% gain. Over the two-year period, what was the change in Tammy's investment?
2005 年大亨塔米投资了 100 美元，投资时长为两年。在第一年，她的投资遭受了 15％的损失，但在第二年，剩余的投资获得了 20％的收益。则在这两年的时间里，塔米的投资发生了什么变化？
- A. / 亏损 5%
- B. / 亏损 2%
- C. / 盈利 1%
- D. / 盈利 2%
- E. / 盈利 5%
正确答案 · Correct Answer
D
解析 · Solution
Solution 1
After the 15 % loss, Tammy has dollars. After the 20 % gain, she has dollars. This is an increase in 2 dollars from her original 100 dollars, a .
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