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      Question

      The given equation has been solved on the basis of a

      certain rule. Find the correct answer for the unsolved equation on that basis: If a ÷ b = (a + b) ÷ (a – b) then (8 ÷ 4) × (14 ÷ 7)
      A 11 Correct Answer Incorrect Answer
      B 14 Correct Answer Incorrect Answer
      C 21 Correct Answer Incorrect Answer
      D 9 Correct Answer Incorrect Answer

      Solution

      (8 ÷ 4) × (14 ÷ 7)  = [(8+4)÷(8-4)] × [(14+7)÷(14-7)]  = [ 12÷4] × [ 21÷7] = 3 × 3 = 9

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