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      Question

      Zara purchased a microwave for Rs. 2400 and spent some

      amount on service. She marked it up by 25%, gave a Rs. 360 discount, and earned a 15% profit. Find the service charge.
      A Rs 1000 Correct Answer Incorrect Answer
      B Rs 800 Correct Answer Incorrect Answer
      C Rs 1200 Correct Answer Incorrect Answer
      D Rs 600 Correct Answer Incorrect Answer

      Solution

      Let service charge = Rs. x
      Effective cost = 2400 + x
      Marked Price = 1.25(2400 + x)
      Selling Price = Marked – 360 = 1.15(2400 + x)
      1.25(2400 + x) – 1.15(2400 + x) = 360
      0.10(2400 + x) = 360
      2400 + x = 3600
      x = Rs. 1200

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