【GMAT考满分数学PS题库】If the price of a certain stock increased by $$\fr_真题_答案

Manhattan - 数学PS - 40

题目内容

If the price of a certain stock increased by $$\frac{1}{5}$$ during the first month and then decreased by $$\frac{1}{4}$$ during the second month, what was the ratio of the stock price at the end of the two months to the original price?

A4:5
B9:10
C10:9
D5:4
E9:5

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正确答案: B

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