This document discusses the Hungarian method for solving assignment problems. It presents a case study where 4 jobs (A, B, C, D) need to be assigned to 4 machines (Q, S, P, R) with different processing costs for each job-machine combination. The Hungarian method is applied to find the optimal assignment that minimizes the total processing cost, which is assigning: A to Q for $25, B to S for $21, C to P for $19, and D to R for $34, for a total cost of $99. The document encourages practicing this method on explanatory cases.