Answer:
Weighted average unit cost = Â $8.78
Explanation:
The weighted average method of inventory determines the average cost per unit of inventory each time a new batch is received. or every new batch received the average cost per unit is re-computed by dividing the total value of stock by the outstanding number of units.
The explanation is completed using calculation below:
Total value of stock = (250× $5)  +  (500×$9) + (375 × 11)  = $9,875
Total units of stock = 250 + 500 + 375 = 1,125 Â units
Weighted average unit cost = Total value of stock / total units of stock
                    =  $9875 / 1125 units = $8.78
Weighted average unit cost = Â $8.78