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      Question

      A team of 15 workers was assigned to complete a task in 30

      days. After working together for 20 days, they discovered that only half of the work had been completed. To finish the remaining work within the original deadline, how many additional workers need to be hired?
      A 12 Correct Answer Incorrect Answer
      B 10 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 20 Correct Answer Incorrect Answer
      E 25 Correct Answer Incorrect Answer

      Solution

      Let the total work = 15 Γ— 30 = 450 units

      Work done in 20 days = 450/2 = 225 units

      Work left = 450 – 225 = 225 units

      Now, the work done in 20 days has to be completed in 10 days.

      So, (15 Γ— 20) = (15 + x) Γ— 10

      300 = 150 + 10x

      x = 15

      So, 15 more men are required to complete the work on time.

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