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    • Question

      18 workers can complete 9 tasks in 24 hours. Find the time

      required by 12 workers to finish 15 tasks.
      A 25 hrs Correct Answer Incorrect Answer
      B 12 hrs Correct Answer Incorrect Answer
      C 60 hrs Correct Answer Incorrect Answer
      D 28 hrs Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the efficiency of each worker be 'x' tasks per hour

      Let the required time be 't' hours

      Therefore, (18x × 24) / 9 = (12x × t) / 15

      Or, t = (18x × 24 × 15) / (12x × 9) = 60

      Required time = 60 hours

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