On the June 12 Interest Payment Date, the Outstanding Balance

On the June 12 interest payment date, the outstanding balance on Delta Nurseries' revolving loan was $65,000. The floating interest rate on the loan stood at 6.25% on June 12, but rose to 6.5% on July 3, and to 7% on July 29. If Delta made principal payments of $10,000 on June 30 and July 31, what were the interest charges to its bank account on July 12 and August 12? Present a repayment schedule supporting the calculations