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      Question

      In what ratio coffee at 305 Rs/kg should be mixed with

      the coffee at 355 Rs/kg so that after mixture its rate become 320 Rs/kg if the quantity of 1st type is 63 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 = 35:15 = 7:3 1st type coffee is 63 kg. So, 7 means 63 kg. Therefore, 2nd type coffee = 63 x (3/7) = 27 kg

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