Cost of goods sold entries will be omitted.
Debit Credit
July 1
Accounts Receivable 23,000
Sales 23,000
July 8
Sales Returns 2,400
Account Receivable 2,400
July 11 (within 10 days from date of purchase, so discount is availed)
23,000 - 2,400 = 20,600
20,600 x 2% = 412
20,600 - 412 = 20,188
Cash 20,188
Sales Discount 412
Accounts Receviable 20,600