Answer:
The control account, account receivable will be increased with a debit of $7400.
Step-by-step explanation:
The selling of goods worth $6400 or services worth $1000, both of then increases the balance of accounts receivable which in turn increases the subsidiary accounts by $6400 + $1000 = $7400.
The control account contains the subsidiary ledgers, this means that its balance would also be increased by $7400.
Therefore, The control account, account receivable will be increased with a debit of $7400.