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Q:

Working for 10 hours per day, 6 men can build a wall in a certain number of days. By working for how many hours/minutes per day can 12 men build the wall in the same days?

  • 1
    7 hours 30 minutes
  • 2
    5 hours
  • 3
    20 hours
  • 4
    10 hours
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Answer : 2. "5 hours"

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