Answer and Explanation:
The journal entries are shown below:
1. Accounts Receivable -Balboa Co. $47,600
 To Sales $47,600
(Being the merchandise sold on credit)
Cost of Goods Sold $28,600
 Merchandise Inventory $28,600
(Being the cost of merchandise is recorded)
2.
Customers Refunds Payable $9,500
 To Accounts Receivable - Balboa Co. $9,500
(being the returned goods is recorded)
Merchandise Inventory $5,700
 To Estimated Returns Inventory $5,700
(being the returned goods is recorded)
3. 
Cash ($47,600 - $9,500) $38,100
 To Accounts Receivable - Balboa Co. $38,100
(being the receipts is recorded)