Answer:
Step-by-step explanation:
Direct Method 
Aug 
a 
Dr Accounts Receivable 55,000
Dr Cash 13,900
 Cr Sales 68,900
b 
Dr Cash 45,100
 Cr Accounts Receivable 45,100
c 
Dr Bad Debt Expense 1,680
 Cr Accounts Receivable 1,680
d 
Dr Accounts Receivable 300
 Cr Bad Debt Expense 300
Dr Cash 300 
 Cr Accounts Receivable 300 
Allowance Method 
a 
Dr Accounts Receivable 55,000
Dr Cash 13,900 
 Cr Sales 68,900
b 
Dr Cash 45,100
 Cr Accounts Receivable 45,100
c 
Dr Allowance for Doubtful debts 1,680 
 Cr Accounts Receivable 1,680
d 
Dr Accounts Receivable 300 
 Cr Allowance for Doubtful debts 300 
Dr Cash 300 
 Cr Accounts Receivable 300