The owner of Jane’s Boutique borrowed $6000 from Halton Community Credit Union on June 5, 2012. The loan was secured by a demand note with interest calculated on the daily balance and charged to the store’s account on the 5th day of each month. The loan was repaid by payments of $1500 on July 15, $2000 on October 10, and $2500 on December 30. The rate of interest charged by the credit union was 8.5% on June 5. The rate was changed to 9.5% effective July 1 and to 10% effective October 1. Determine the total interest cost on the loan.