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      Question

      In a tank, milk and water are mixed in the ratio 5:4. When

      36 litres of water is added, the ratio becomes 5:6. Find the total quantity of the final mixture.
      A 200 litres Correct Answer Incorrect Answer
      B 160 litres Correct Answer Incorrect Answer
      C 360 litres Correct Answer Incorrect Answer
      D 250 litres Correct Answer Incorrect Answer

      Solution

      ATQ,

      Milk : Water = 5:4 β†’ Total = 9 parts

      Let total = 9x

      β†’ Milk = 5x, Water = 4x

      Add 36 litres of water:

      β†’ New water = 4x + 36

      β†’ New ratio = 5x : (4x + 36) = 5 : 6

      Image

      Original mixture = 9 Γ— 36 = 324 litres

      Final = 324 + 36 = 360 litres

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