20 kg each of substances A and B are dissolved in 60 kg of water. The solubility of A is 1.5 kg per kg water, while that of B is 1 kg per kg water. The solution is heated, and it is noticed that when...

20 kg each of substances A and B are dissolved in 60 kg of water. The solubility of A is 1.5 kg per kg water, while that of B is 1 kg per kg water. The solution is heated, and it is noticed that when the concentration of the solution reaches the solubility of any of the substances, further evaporation leads to the crystallization of that particular substance.  If 80% of the water content evaporates.

A.) What is the weight of the final solution?

B.) What is the amount of crystals formed?