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Q:

How many kg of pure salt must be added to 40 kg of 4% solution of salt and water to increase it to 12% solution?

  • 1
    2.04 kg
  • 2
    2.64 kg
  • 3
    3.14 kg
  • 4
    3.64 kg
  • 5
    5.64 kg
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Answer : 4. "3.64 kg "

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