GMAT 考满分题库

- 数学PS -
There were 80 walnuts and 40 peanuts in the box. After putting some walnuts into the box, walnuts accounted for 75% of all nuts. How many walnuts were put into the box?
  • A10
  • B20
  • C30
  • D40
  • E50
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正确答案: D

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