Pembahasan Ujian PAI: A10 – No. 12 – November 2015

Bunga = Total Payment – Loan
Bunga = \(8954,238483 – 5000\) Bunga = \(3954,238483\)

Metode pembayaran Budi:
Bunga = \(X{S_{\left. {\overline {\, n \,}}\! \right| i\% }}\) \(3954,238483{\rm{ }} = X{S_{\left. {\overline {\,  {10} \,}}\! \right| 6\% }}\) \(X = 299,9819068\) (Bunga atas 1 kali pembayaran)
Total Bunga = \(299,9819068×10\) Total Bunga = \(2999,819068\)

Metode Pembayaran Cherry: Payment = Loan \({(1 + i)^n}\) Loan \(= X{a_{\left. {\overline {\, n \,}}\! \right| i\% }}\) \(5000 = X{a_{\left. {\overline {\, {10} \,}}\! \right| 6\% }}\) \(X = 679,3397911\) Bunga \(= (679,3397911×10) – 5000 = 1793,397911\)

Total Bunga \(= 3954,238483 + 2999,819068 + 1793,397911 = 8747,455462 \approx 8748\)