The salt will be added untill the solution became saturated, it means it will have the total amount of salt the solvent can dissolve. The amount of salt will be the solubility multiplied by the mass of the solvent.
So, for 100ºC, the maximum salt that can be dissolved in 240g of water is:
31.6g/100g * 240 g = 75.84 g of salt
75.84 of salt is added to the water at 100ºC.
The maximum salt that can be dissolved in water at 20ºC is: