[" Ex.30.How many kg ef pure salt must be added to "30kg" of "2%" solution of salt,"],[" water to increase it to a "10%" solution? "]

If n n/3 kg of pure salt must be added to 30 kg of 2% solution of salt and water to increase it to a 10% solution, then find n.

How many kg of pure salt must be added to 30kg of 2% of salt and water to increase it to a 10% solution?

How many liters of a 25% saline solution must be added to 3 liters of a 10% saline solution to obtain a 15% saline solution?

How many ounces of a solution that is 30 percent salt must be added to a 50-ounce solution that is 10 percent salt so that the resulting solution is 20 percent salt?

Name the method used to separate pure water from a solution of salt.

The number that is to be added to 10% of 320 to have the sum as 30% of 230, is