Lito Corporation has been buying product A in lots of 1,200 units which represents a four month's supply. The cost per unit is 220. The order cost is P200 per order; and the annual inventory carrying cost per one unit is P25. Assume that the units will be required evenly throughout the year. Required: Calculate the following: 11. Economic order quantity. 12. Number of orders in a year. 13. Average inventory based on economic order quantity