The value of ending inventory using the average cost method is $4,200.
In order to determine the ending inventory using the average cost method, the total cost of inventory would be divided by the total inventory bought. The average price would be multiplied by the ending inventory.
Average cost = $12,600 / (126 + 441 + 63) = $20
Ending inventory = $20 x 210 = $4,200
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