QUESTION 3 (14 MARKS) (10 MARKS) 3.1 Page 17 of 27 Decor Ltd has the following figures regarding its inventory: Cost price per unit N$50 per unit Storage cost per unit per year N$5 per unit Weekly demand (usage) 2 000 units Normal delivery time 2.5 weeks Insurance cost per unit per year N$5 per unit Interest rate 9% Ordering cost for 2 orders N$80 Safety stock 5 000 units There are 50 normal working weeks per year, and four weeks in one month. Mark REQUIRED: 3.1.1 Calculate the economicorder quantity (EOQ) 3.1.2 Calculate the number of orders per year 3.1.3 Determine the ordering cost per year 3.1.4 Determine the total inventory cost for the year