An investment of 1000 is to be used to make payments of 10 at the end of the first year, 20 at the end of the second year, 30 at the end of the third year, etc., every year for as long as possible. A smaller final payment is paid one year after the last regular payment. The fund earns an effective rate of interest of 4%. Calculate the amount of the smaller final payment R. An investment of 1000 is to be used to make payments of 10 at the end of the first year, 20 at the end of the second year, 30 at the end of the third year, etc., every year for as long as possible. A smaller final payment is paid one year after the last regular payment. The fund earns an effective rate of interest of 4%. Calculate the amount of the smaller final payment R