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    Question

    In what ratio coffee at 315 Rs/kg should be mixed with

    the coffee at 355 Rs/kg so that after mixture its rate become 330 Rs/kg if the quantity of 1st type is 30 kg what will be the quantity of the 2nd coffee? 
    A 27 kg Correct Answer Incorrect Answer
    B 15 kg Correct Answer Incorrect Answer
    C 21 kg Correct Answer Incorrect Answer
    D 18 kg Correct Answer Incorrect Answer

    Solution

    Ratio = 25:15 = 5:3 1st type coffee is 30 kg. So, 5 means 30 kg. Therefore, 2nd type coffee = 30 x (3/5) = 18 kg

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