The journal entries for the given transaction are:January 16: Cash $100Accounts receivable $700Interest receivable $100January 31: Interest receivable $8Interest revenue $8February 15: Cash $708Interest receivable $8Interest revenue $4Accounts receivable $700The reason is,Given data:Amount settled by customer = $800Amount of promissory note = $700Cash given = $100Rate of interest = 12%Date of the transaction = January 16Since the customer settled an overdue account in the amount of $800 on January 16 and the customer signed a 30-day promissory note for $700 bearing 12% and gave $100 in cash to the lender, the journal entry for the transaction will be:Cash $100Accounts receivable $700As of January 31, the interest will be accrued properly by the lender, which will be:Interest receivable $8Interest revenue $8Therefore, the journal entry for February 15 will be:Cash $708Interest receivable $8Interest revenue $4Accounts receivable $700