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ZX-0655996170PSAT 8/9 P2 · 第 19 题
PSAT 8/9 P2 · 原库模块 1 · Q19 原库参考解析
The number of coins in a collection increased from 9 to 90. What was the percent increase in the number of coins in this collection?
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ONE QUESTION, ONE STEP
ZX-0655996170PSAT 8/9 P2 · 原库模块 1 · Q19 原库参考解析
The number of coins in a collection increased from 9 to 90. What was the percent increase in the number of coins in this collection?
参考答案：
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