Sydney is the production manager of silver enterprises, a small producer of metal parts. Silver enterprises supplies afc trading, a larger assemble company, with 15,000 wheel bearings each year. This order has been stable for some time. Setup cost for silver enterprises is $40, and holding cost is $0. 60 per wheel bearing per year. Silver enterprises can produce 500 wheel bearings per day. Afc trading is a just –in-time manufacturer and requires that 50 bearings be shipped to its plant each business day