Question: an engineer plans on doing injection molding using a polymer...

An engineer plans on doing injection molding using a polymer that can be dissolved in chloroform, ethanol, and N,N-dimethylformamide. He determines the solubility parameters for three solvents at room temperature to be 11.0, 12.6, and 17.4 (MPa)^1/2, respectively, provide a mathematical solution to determine which of the solvent system provide the fastest solidification rate for the polymer.