A solution contains 14 g of KCI in 100. g of water at 40°C. What is the minimum amount of KCI that must be added to make this a saturated solution?
This is something that must be established by either (i) measurement, or (ii) consultation of the literature.
And you have an internet to search. You would be much better advized to concentrate on the definition of a saturated solution (which is?). This is an important definition to know.