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A 200-liter solution is 50% salt. How many liters of pure water must be added to make the solution 40% salt?
A 200-liter solution is 50% salt. How many liters of pure water must be added to make the solution 40% salt?
A 200-liter solution is 50% salt. How many liters of pure water must be added to make the solution 40% salt?