At the beginning of the month, the accounts receivable subsidiary ledger showed balances for Anchor Company Tk 5,000 and Best Company Tk 7,000. During the month, credit sales were made to Anchor Tk 6,000, Best Tk 4,500, and Zen Tk 8,500. Cash was collected on account from Best Tk 11,500 and Zen Tk 3,000. At the end of the month, the Accounts Receivable account of Best Company in the general ledger should have a balance of -