Answer:
The journal entries are as follows:
(i) (a) Accounts receivable A/c Dr. $744,100
To Sales A/c $744,100
(To record the sales on account)
(b) Cash A/c Dr. $829,950
To accounts receivables $829,950
(To record the cash collections for credit sales)
(ii) Allowance for doubtful accounts A/c Dr. $7,798
To Accounts receivables $7,798
(To record the write-off of uncollectible accounts during the period)
(iii) Accounts receivables A/c Dr. $2,979
To Allowance for doubtful accounts $2,979
(To record the recovery of the uncollectible account during the period)