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      Question

      ‘X’ owns 40% less pens than ‘Y’. ‘Y’ owns

      50% more pens than ‘Z’. By what percentage are the pens with ‘X’ less than those with ‘Z’?
      A 10% Correct Answer Incorrect Answer
      B 25% Correct Answer Incorrect Answer
      C 15% Correct Answer Incorrect Answer
      D 18% Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let, number of pens with ‘Y’ = 30a

      Number of pens with ‘X’ = 0.6 × 30a = 18a

      Number of pens with ‘Z’ = (30a/1.5) = 20a

      So, required percentage = {(20a – 18a)/20a} × 100 = 10%

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