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Of the paperbacks in a private library, 5 percent are biographies. If 3 percent of all the books in the library are paperbacks that are biographies, what percent of all the books in the library are paperbacks?
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· 相关考点
2.4.1 百分比所属关系与倍数关系的描述
2.4.1 百分比所属关系与倍数关系的描述
以上解析由 考满分老师提供。
