After 30 kg of water had been evaporated from a solution of salt and water, which had 15% salt, remaining solution had 20% salt. The weight of the original solution was `80\ kg` b. `120\ kg` c. `90\ kg` d. `135\ kg`

After 25kg of water had been evaporated form a solution of salt and water,which had 20% salt,the remaining solution had 30% salt.Find the weight of the original solution.

After 30kg of water had been evaporated from a solution of salt and water,which had 15% salt,remaining solution had 20% salt.The weight of the original solution was 80backslash kg b.120backslash kg c.90backslash kgd.135backslash kg

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?

The molality of a sulphuric acid solution is 0.6 'mol//kg'. The total weight of the solution which contains 1 kg of solvent.