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    Question

    A vendor sold 25 laptops at a profit of 12% and 15

    laptops at a profit of 20%. If he had sold all the 40 laptops at a profit of 18%, his profit would have increased by тВ╣30,000. What is the cost price of each laptop, if the cost price of all the 40 laptops is the same?
    A тВ╣28,000 Correct Answer Incorrect Answer
    B тВ╣25,000 Correct Answer Incorrect Answer
    C тВ╣26,000 Correct Answer Incorrect Answer
    D тВ╣27,000 Correct Answer Incorrect Answer

    Solution

    ATQ, Let the cost price of each laptop be C. Profit from 25 laptops at 12%: 3C Profit from 15 laptops at 20%: 3C Total original profit: 6C If sold all at 18%, profit = 7.2C. Increase in profit = тВ╣30,000: Thus, the cost price of each laptop is тВ╣25,000.

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