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    Question

    How much groundnut powder at Rs. 90 a kg. should be

    added to 56 kg. of cashew powder at Rs.310 a kg. so that by selling the mixture for Rs. 280 a kg, a person will gain 12% profit?
    A 10 kg Correct Answer Incorrect Answer
    B 15kg Correct Answer Incorrect Answer
    C 12 kg Correct Answer Incorrect Answer
    D 21 kg Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Sol. C.P. of the mixture = 280 *100/112= 250 a kg. By Alligation rule: 310-250/250-90=60/160 ∴ Required ratio = 3:8 Therefore, when cashew powder is 56 kg, groundnut powder should be = 56*3/8 = 21 kg.

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