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The ratio of A to B is 1:4 before a chemical reaction, $$\frac{1}{4}$$of A was transformed into B, while at the same time, $$\frac{1}{4}$$ of B was transformed into A, then what is the ratio of A to B after the reaction.
Give your answer as a fraction.
Give your answer as a fraction.
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· 相关考点
2.1.1 分数的加减乘除运算
以上解析由 考满分老师提供。
