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How many liters of pure water should be added to 150150 liters of a 35%35\% salt water saline solution to make it a 25%25\% salt water saline solution?

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Full solution

Q. How many liters of pure water should be added to 150150 liters of a 35%35\% salt water saline solution to make it a 25%25\% salt water saline solution?
  1. Identify initial amount: Identify the initial amount of salt in the solution.
  2. Set up final concentration equation: Set up the equation for the final concentration after adding xx liters of pure water.
  3. Solve for xx: Solve the equation for xx.

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