create T accounts for the inventory and cost of goods sold account enter the opening balance and post the September transaction

On September 1, the beginning of its fiscal year, Campus Office Supply Ltd. had an inventory of 80 calculators at a cost of $20 each. The company uses a perpetual inventory system. During September, the following transactions occurred: Sept. 2 Purchased 600 calculators for $20 each from Digital Corp. on account, terms n/30. 10 Returned 8 calculators to Digital for $160 credit because they did not meet specifications. 11 on prior experience. 14 Granted credit of $240 to Campus Book Store for the return of 8 calculators that were not ordered. The calculators were restored to inventory. 29 Paid Digital the amount owing. 30 Received payment in full from the Campus Book Store