Solution:
Date Accounts and explanations Debit
6-Jan Accounts receivable 14000
sales 14000
cost of merchandise 8400
merchandise inventory 8400
8-Jan Accounts receivable 20000
sales 20000
cost of merchandise 14000
merchandise inventory 14000
16-Jan Accounts receivable 19500
sales 19500
cost of merchandise 11700
merchandise inventory 11700
18-Jan cash 20000
accounts receivable 20000
19-Jan sales returns 4500
account receivable 4500
merchandise inventory 2700
purchase returns 2700
26-Jan cash 14850
discount 150
Accounts receivable 15000
31-Jan service charge 3000
cash 3000
31-Jan cash 14000
accounts receivable 14000