A loan of R40 000 is to be amortised by sixty regular equal monthly payments at an interest rate of 16,5% p.a. effective. The repayments start
one month after the granting of the loan. When the annual effective rate increases by 1% p.a. immediately after the thirty sixth payment, the
regular equal monthly repayments remain unchanged. In that case, the final payment, F (F < Pt ), to the nearest cent, that will be required to
amortise the one month after the last equal payment, is R