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    Question

    An article is sold at a profit of 30%. Let 'a' (in Rs.)

    represent the cost price, 'b' (in Rs.) the selling price, and 'c' (in Rs.) the profit earned. Given that the total of these three values is 3120, i.e., (a + b + c) = 3120, determine the value of 'a'.
    A Rs. 1200 Correct Answer Incorrect Answer
    B Rs. 1000 Correct Answer Incorrect Answer
    C Rs. 1400 Correct Answer Incorrect Answer
    D Rs. 1500 Correct Answer Incorrect Answer

    Solution

    Let the cost price of article be Rs. '10y'
    Selling price of article = 1.3 X 10y = Rs. '13y'
    Profit earned = 13y - 10y = Rs. '3y'
    So, 10y + 13y + 3y = 3,120
    Or, 26y = 3,120
    Or, 'y' = 120
    Therefore, cost price of article = a = 120 X 10 = Rs. 1,200

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