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Q:

A man, a woman and a boy can complete a job in 3, 4 and 12 days respectively. How many boys must assist 1 man and 1 woman to complete the job in $$1\over4$$  of a day?

  • 1
    1
  • 2
    4
  • 3
    19
  • 4
    41
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Answer : 4. "41"

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