What is the optimal number of working days between orders? What is the total annual inventory cost (carrying costs + ordering costs)?

Question 1 (10 Marks)

Ahmad is attempting to perform an inventory analysis on one of his most popular products. Annual demand for this product is 5,000 units; carrying cost is RM5SO per unit per year; order costs for his company typically run nearly RM30 per order; and lead time averages 10 days (assume 250 working days per year}