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      Question

      A shopkeeper purchases 50 pens and recovers the cost

      price after selling 35 of them. He sells the remaining 15 pens at a profit of 20% and earns Rs. 180 as profit on them. What is the total selling price of the 50 pens?
      A Rs.4450 Correct Answer Incorrect Answer
      B Rs.5020 Correct Answer Incorrect Answer
      C Rs.4080 Correct Answer Incorrect Answer
      D Rs.3350 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the cost price per pen be Rs. x.
      Total CP of 50 pens = 50x.
      SP of 35 pens = 50x (cost recovered).
      Profit on remaining 15 pens = 20%.
      So, 15x ร— 0.2 = 180
      3x = 180 โ‡’ x = Rs. 60
      Total SP = 50x + 1.2 ร— 15x
      = 50 ร— 60 + 1.2 ร— 15 ร— 60
      = 3,000 + 1,080 = Rs. 4,080

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