GMAT 考满分题库

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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