A 12-year loan of 16,000 is to be repaid with payments at the end of each year consisting of interest on the loan and a sinking fund deposit. Interest on the loan is charged at a 12.5% annual effective rate. The sinking fund's annual effective interest rate is 10.5%. However, beginning in year 8, the annual effective interest rate on the sinking fund drops to 7.5%. As a result, the annual payment to the sinking fund is then increased by X. Calculate X. [6.b #04] 274 352 300 248 0326