Hasse Diagram: What is the least amount of time required to complete the meal? What is the fewest number of workers required to complete the task in that time? (Assume that all workers function in parallel, and all are equally capable of performing a task.)

Serve 15 min Arrange on platters Cook in wok 20 min Make garnishes Steam rice Chop water chestnuts 15 min Cut sh Wash 20 min shellfish vegetables 10 min Clean sh Cut ginger and garlic Buy groceries 15 min so min 45 \"1'" Buy seafood 30 min Find recipe 20 W"