Ayesha is a trader who maintains a full set of accounting records and prepares control accounts at the end of each month. She provided the following information for the month of August 2021. $ On 1 August Sales ledger control account debit balance 9800 Sales ledger control account credit balance 420 Purchases ledger control account credit balance 7700 Totals for the month Credit sales 88850 Credit purchases 55400 Cash purchases 1860 Receipts from customers 82 100 Payments to credit suppliers 50600 Discount received 600 Discount allowed 900 Irrecoverable debt written off 300 Provision for doubtful debts 450 Sales returns 2400 Interest charged to customer on overdue account 90 Contra between sales ledger and purchases ledger 2920 The sales ledger control account credit balance brought down on 1 September 2021 was $350.