Correction of errors — practice question

Paul carries on business as a trader. He uses a three-column cash book and has drawn up draft financial statements for the year ended 31 March 2024. He later uncovered these five mistakes in the accounting records for the year ended 31 March 2024: 1 A purchase invoice, $140$, was debited to the office equipment account. 2 Cash discount received, $18$, was entered in the bank payments column of the cash book. 3 Carriage inwards, $82$, was credited to the carriage outwards account. 4 A payment for insurance, $375$, was debited to the bank account and credited to the insurance account. 5 The bank receipts column of the cash book for February 2024 had been undercast by $90$.