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      Question

      A 300 ml mixture consists of cow's milk and buffalo's

      milk. Cow's milk contains 10% fat, while buffalo's milk contains 15% fat. The total fat content in the mixture is exactly 38 ml. How much cow's milk is present in the mixture?
      A 120 ml Correct Answer Incorrect Answer
      B 140 ml Correct Answer Incorrect Answer
      C 160 ml Correct Answer Incorrect Answer
      D 100 ml Correct Answer Incorrect Answer

      Solution

      In 300 ml of cow's milk, fat present = 300 * 10/100 = 30 ml
      In 300 ml of buffalo's milk, fat present = 300 * 15/100 = 45 ml
      In 300 ml of mixture, fat present = 38 ml Image
      So, cow's milk and buffalo's milk mixed in the ratio = 7: 8
      So, quantity of cow's milk in this mixture = 7/15 * 300 = 140 ml

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