Answer: $706.64
Step-by-step explanation:
Given that,
Beginning Merchandise Inventory = 12 units at $91
March 10: Sold = 10 units
June 10: Purchased = 24 units at $87
October 30: Sold = 18 units
Average cost =

=

= $88.33
Ending inventory units = 36 - 18 - 10
= 8 units
Amount of the company's ending Merchandise Inventory:
= Ending inventory units × Average cost
= 8 units × $88.33
= $706.64