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    Question

    A milkman mixes two types of milk, one costing ₹60 per

    liter and the other costing ₹90 per liter, to make a mixture. The final mixture is sold at ₹84 per liter, earning a profit of 20%. In what ratio should the milkman mix the two types of milk?
    A 1:2 Correct Answer Incorrect Answer
    B 2:1 Correct Answer Incorrect Answer
    C 3:2 Correct Answer Incorrect Answer
    D 4:1 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Selling price of mixture = ₹84/liter. Cost price of mixture = ₹84 ÷ 1.2 = ₹70/liter. Using alligation: Difference between ₹90 and ₹70 = ₹20. Difference between ₹70 and ₹60 = ₹10. Ratio = 20:10 = 2:1. Correct Option: b) 2:1

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