Appliances Inc. is preparing an aggregate production plan for washers for the next four months. The company's expected monthly

demand is given below in the chart. The company will have $630$ washers in inventory at the beginning of the month and desires to

maintain at least that number at the end of each month. Assume hiring and layoff$/$firing$,$ if necessary, occur at the beginning of the

month. Below is other critical data:

Production cost per unit $=$$$378$

Inventory carrying cost per month per unit $=$$$63($based on ending month inventory$)$

Hiring cost per worker $=$$$1,260$

Firing cost per worker $=$$$2,520$

Beginning number of workers $=13$

ZoictureClick here for the Excel Data File

Each worker can produce $126$ units per month.

a$.$ Given the planning information, develop a level production plan and a chase production plan. $($Leave no cells blonk $-$ be certaln to

enter $"O"$ wherever required.$)$

b$.$ Determine the cost of the two plans.