help please, have no clue how to solve this.

(a) you are given a mixture containing two compounds, A and B. both compounds have a solubility of 1g/100mL of solvent at 20 deg C and 16g/100mL of solvent at 100 deg C. The sample is composed of 3.5 g of A and 10 g of B. at 100 deg C the entire sample dissolves in a minimum amount of solvent. The solution is cooled to 20 deg C and crystals are collected. Calculate the composition of the crystals and the yield of the process. What is the composition of the mother liquor?

(b) If the crystals in question (a) are recrystalized from 100 mL of solvent , what will be the yield and composition of the crystals obtained?

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