i need help with question B i don't know how to do it

The debits and credits for five related transactions, (1) through (5), are presented in the following accounts. Assume the credit terms were 2/10, 30, using the net method under a perpetual inventory system. Cash Sales (5) 10,290 11,760 Accounts Receivable Cost of Goods Sold (1) 11,760 (3) 1,470 (2) 7,000 (5) 10,790 Inventory (4) 900 (2) 7,000 Estimated Returns Inventory 900 Customer Refunds Payable (3) 1.470 a. Describe cach transaction Sold merchandise on account, net of discount 2. Recorded the cost of the goods sold and reduced the wentary account 3. Granted a credit against a customer's accounts receivable for returned merchandise 4. Updated the meetory account for the cost of the merchandise returned. 5 Received the balance de b. What was the amount of the merchandise that was returned 1. Oud My Work Next All worked Sent for