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    Question

    Cost price of article ‘B’ is (250/7)% of selling price

    of article ‘A’. Article ‘A’ is sold at 40% profit and cost price of article ‘A’ is Rs. 15 more than that of article ‘B’. Find the cost price of article ‘B’ if the cost price of article ‘A’ is the same as the selling price of article ‘B’.
    A Rs.35 Correct Answer Incorrect Answer
    B Rs.10 Correct Answer Incorrect Answer
    C Rs.15 Correct Answer Incorrect Answer
    D Rs.25 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let cost price of article ‘A’ = Rs. ‘x’ = selling price of article ‘B’

    Selling price of article ‘A’ = 1.40 × x = Rs. ‘1.4x’

    So, cost price of article ‘B’ = (5/14) × 1.4x = Rs. ‘0.5x’

    ATQ,

    x = 0.5x + 15

    Or, 0.5x = 15

    Or, x = 30

    So, cost price of article ‘B’ = 0.5x = 0.5 × 30 = Rs. 15

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