Question

13) The mass of a solution of common salt and water is 210 g. Given that the ratio of salt to water is 2:13,
calculate the mass of salt and the mass of water.
When a certain mass of salt and nine times of that mass of water is added to the solution, the ratio of
salt to water becomes 3:20. Calculate the mass of salt and the mass of water which was added to the
solution

Answer 1

not sure about it at all.