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    Question

    A seller makes a profit of 20% by selling 45 kg of pure

    sugar. Later, he mixes some impurities into the sugar and sells the entire mixture at the original cost price of pure sugar. How much impurity (in kg) did he mix into the sugar?
    A 9 kg Correct Answer Incorrect Answer
    B 5 kg Correct Answer Incorrect Answer
    C 6 kg Correct Answer Incorrect Answer
    D 10 kg Correct Answer Incorrect Answer
    E 8 kg Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let CP of sugar = ₹1/kg So, CP of 45 kg = ₹45 20% profit = ₹9 Selling Price = ₹45 + ₹9 = ₹54 Now, mixture sold at ₹1/kg (same as CP) Let impurity added = x kg So, 45+x = 54 ⇒ x = 9 kg

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