GMAT 考满分题库

- 数学PS -
At the beginning of year 1, an investor puts p dollars into an investment whose value increases at a variable rate of $$x_n%$$per year, where n is an integer ranging from 1 to 3 indicating the year. If $$85\lt{x_n}\lt110$$ for all n between 1 and 3, inclusive, then at the end of 3 years, the value of the investment must be between
  • A$p and $2p
  • B$2p and $5p
  • C$5p and $10p
  • D$10p and $25p
  • E$25p and $75p
显示答案
正确答案: C

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