GMAT 考满分题库

- 数学PS -
It takes 4 mins for ab to complete 10000 tasks together. It takes 3 minutes for abc to complete the same task together. How long does it take for c to complete the same task alone?
  • A6
  • B8
  • C10
  • D12
  • E14
显示答案
正确答案: D

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