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    Question

    Ratio of cost price of article β€˜X’ and article

    β€˜Y’ is 4:7, respectively. Profit percentage earned on selling article β€˜X’ is same as loss percentage incurred on selling article β€˜Y’. Total selling price of both the articles is Rs. 20800. If average of cost price of both the articles is Rs. 11000, then find the difference between their selling prices.
    A Rs. 1200 Correct Answer Incorrect Answer
    B Rs. 1400 Correct Answer Incorrect Answer
    C Rs. 1600 Correct Answer Incorrect Answer
    D Rs. 1800 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total cost price of articles β€˜X’ and β€˜Y’ together
    = 11000 Γ— 2 = Rs. 22000 Cost price of article β€˜X’
    = 4/11 Γ— 22000 = Rs. 8000 Cost price of article β€˜Y’
    = 22000 – 8000 = Rs. 14000 Let profit percentage earned on selling article β€˜X’ is x%. So, 8000 Γ— (1 + x/100) + 14000 Γ— (1 – x/100) = 20800 Or, 8000 + 80x + 14000 – 140x = 20800 Or, 22000 – 60x = 20800 Or, 60x = 1200 Or, x = 20 So, desired difference
    = 1.20 Γ— 8000 – 0.80 Γ— 14000
    = 9600 – 11200
    = Rs. 1600

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