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?

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）5％loss｜5％的损失（B）2％loss｜2％的损失（C）1％gain｜1％的收益（D）2％gain｜2％的收益（E）5％gain｜5％的收益

A. $5\%\text{ loss}$
B. $2\%\text{ loss}$
C. $1\%\text{ gain}$
D. $2\% \text{ gain}$
E. $5\%\text{ gain}$

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