In preparing the receivables ledger control account for Sunrise Manufacturing Plc for the quarter ended 30 September 2023, the accountant discovered that the total of the sales day book for August 2023 was overcast by ₦180,000, and that a debtor's balance of ₦45,000 was included in the list of individual balances as ₦54,000 (a transposition error). Which of the following correctly describes the adjustments required?

An overcast in the sales day book means total credit sales were recorded as higher than they actually were, so the control account (debit side) was overstated by ₦180,000; the correction is to credit the control account by ₦180,000. The transposition error (₦45,000 recorded as ₦54,000) is an error in the individual debtor's account within the memorandum ledger, not in the control account, so the correction of ₦9,000 (₦54,000 − ₦45,000) is made only to the individual account and does not affect the control account. This distinction between the control account and the memorandum ledger is a fundamental principle of control account operation.