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Q: A can do a certain job in 12 days. B is 60% more efficient than A. The number of days, it takes B to do the same piece of work is ………

  • 1
    6 days
    Correct
    Incorrect
  • 2
    6 ¼ days
    Correct
    Incorrect
  • 3
    7 ½ days
    Correct
    Incorrect
  • 4
    8 days
    Correct
    Incorrect
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Answer : 3. "7 ½ days"
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