How do you relate benzoic acid solubility at 0 degrees C to solubility in boiling water (100 degrees), poss.?

I'm trying to calculate maximum theoretical recovery from a recrystalization during which 22.5 g benzoic acid were dissolved in 400mL boiling water. Theoretically, what is maximum % recovery? Note* I'm really lost here, please help me out any way you can.