If Brett reorders the figurines based on the economic order​ quantity, Brett's average inventory of porcelain​ figurines is 768 units.
The economic order quantity is computed as the square root of (2 x Annual Sales Unit (Demand) x Ordering Cost)/Carrying Cost
= square root of (2 x 30,000 x $800)/$25
= square root of 1,920,000
= 1,386 units
Average inventory = (Economic Order Quantity)/2 + Safety stock
= 1,386/2 + 75
= 693 + 75
= 768 units
Thus, Brett's Gift Box average inventory of porcelain figurines is 768.
Learn how to calculate average inventory and the use of economic order quantity here: https://brainly.com/question/5525521 and https://brainly.com/question/9068415 respectively.
Data:
Estimate sales units for next year = 30,000 porcelain figurines
Average per-unit carrying cost = $25
Per-order Ordering Cost = $800
Required safety stock = 75 figurines