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    Question

    In what ratio coffee at 255 Rs/kg should be mixed with

    the coffee at 310 Rs/kg so that after mixture its rate become 270 Rs/kg if the quantity of 1st type is 40 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 = 40:15 = 8:3 1st type coffee is 40 kg. So, 8 means 40 kg. Therefore, 2nd type coffee = 40 x (3/8) = 15 kg

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