6. [10 Points) A manufacturer has a steady (uniform) annual demand for 15,500 cancs of sugar. It costs $10 to store 1 case for 1 year, 531 in set up cost to produce ench batch, and S19 to produce each case. Find the number of cases per batch that should be produced to minimize cost. Hint: Consider all costs associated with this question (set-up, production, and storage costs)