Hull Baking Company uses 250,000 lb of sugar annually in its cakes and pastries. The company can order the sugar in 100 lb bags, at the cost of $19.50 per bag, delivered. The cost of preparing and sending an order is $50. The storage and handling costs amount to $2 per bag per year, based on average inventory. The cost of capital for Hull is 12%. Calculate the optimal size of an order.