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      Question

      5 men and 5 women can do some work in 2 days. If each

      man is 25% more efficient than a woman, then find the time taken by 9 men to finish the same work together.
      A 3 days Correct Answer Incorrect Answer
      B 2 days Correct Answer Incorrect Answer
      C 4 days Correct Answer Incorrect Answer
      D 5 days Correct Answer Incorrect Answer
      E 6 days Correct Answer Incorrect Answer

      Solution

      Let the efficiency of each woman be '4x' units/day. So, efficiency of each man = 4x × 1.25 = '5x' units/day So, total work = 2 × {(5 × 5x) + (5 × 4x)} = '90x' units So, required time = 90x ÷ (9 × 5x) = 2 days

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