题目信息
Two years ago, Sam put $1,000 into a savings account. At the end of the first year, his account had accrued $100 in interest bringing his total balance to $1,100. The next year, his account balance increased by 10%. At the end of the two years, by what percent has Sam's account balance increased from his initial deposit of $1,000?
A:19%
B:20%
C:21%
D:22%
E:25%
参考答案及共享解析

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已选答案:
正确答案:
C:21%
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