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Three carpenters , , and working simultaneously and independently at their respective constant rates, can build a shed in 8 hours. How long does it take Carpenter , working alone at a constant rate, to build the shed?

(1) Carpenters and , working simultaneously and independently at their respective constant rates, can build the shed in 12 hours.

(2) Carpenters and , working simultaneously and independently at their respective constant rates, can build the shed in 16 hours.

  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are not sufficient.
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正确答案: B

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