Actuarial Math

#4 A loan is being repaid with 20 payments of $2000 followed by 10 payments of $1000 at the end of each half-year. If the nominal rate of interest convertible quarterly is 12%, find the outstanding loan balance immediately after 15 payments have been made by the retrospective method. #4 A loan is being repaid with 20 payments of $2000 followed by 10 payments of $1000 at the end of each half-year. If the nominal rate of interest convertible quarterly is 12%, find the outstanding loan balance immediately after 15 payments have been made by the retrospective method