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      Question

      By selling an article for Rs. 540, a shopkeeper gains

      20%. Find the cost price of the article.
      A 550 Correct Answer Incorrect Answer
      B 320 Correct Answer Incorrect Answer
      C 450 Correct Answer Incorrect Answer
      D 770 Correct Answer Incorrect Answer

      Solution

      Let CP = x SP = x × (1 + 20/100) = 1.20x 1.20x = 540 ⇒ x = 540 / 1.20 = 450

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