Answer:
Date Account titles Debit Credit
Jul-15 Cash $16,640
Sales revenue $16,000
Sales tax payable $640
($16,000*4%)
Jul-15 Cost of goods sold $8,000
Inventory $8,000
Aug-01 Sales tax payable $640
Cash $640
Nov-03 Cash $480
Unearned ticket revenue $480
Nov-20 Unearned ticket revenue $80
($480*1/6)
Ticket revenue $80