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题目内容
Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x units of product P in 6 days. How many of these machines, working simultaneously and independently at this constant rate, can produce a total of 3x units of product P in 4 days?
  • A24
  • B18
  • C16
  • D12
  • E8
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正确答案: B
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题目基本信息

  • 所属科目:数学PS
  • 题目来源1:OG16-76
  • 题目来源2:OG17-85
  • 题目来源3:OG18-102
  • 正确率:86%
  • 难度:中等

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