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Option 4 : Rs. 1,100
Let the cost price of profit article be 11x and loss article be 9x
The total cost price of two articles = 2000
⇒ 11x + 9x = 2000
⇒ 20x = 2000
⇒ x = 100
∴ The cost price of profit article = 11x = 11 × 100 = 1100 rupees
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