1. (5.4A 2) JoShop needs to assign 4 jobs to 4 workers. The cost of performing a job is a function of the skills of the workers. Table 1 below summarizes the cost of the assignments. Worker 1 cannot do job 3 and worker 3 cannot do job 4 . Determine the optimal assignment using the Hungarian method. Table 1: 2. (5.4A 3) In the JoShop Problem, suppose that an additional (fifth) worker becomes available for performing the four jobs at the respective costs of $60,$45,$30, and $80. Is it economical to replace one of the current workers with the new one