The table below gives data relating to three types of product which a super market purchases from a company. The cost of ordering is $125 per order irrespective of its content. Items of each product are delivered to the shop by the supplier in complete orders. Neglecting buffer stock, what is the economic order size for each product and consequently the total order size? What is the order interval? Purchased product A B C Annual sales 5000 3250 2900 Holding cost/item/year 0.5 1.0 0.75