The annual demand of an appliance company is $8000$ units. The production capacity is

$200$ units per day. Each time production starts, it costs the company $$120$ to move

materials into place, reset the assembly line, and clean the equipment. The holding cost

of a refrigerator is $$50$ per year. The current production plan calls for $400$ refrigerators to

be produced in each production run. Assume $250$ working days per year.The annual demand of an appliance company is $8000$ units. The production capacity is

$200$ units per day. Each time production starts, it costs the company $$120$ to move

materials into place, reset the assembly line, and clean the equipment. The holding cost

of a refrigerator is $$50$ per year. The current production plan calls for $400$ refrigerators to

be produced in each production run. Assume $250$ working days per year.