In: Finance
a:
| Instalment No | Opening balance | Payment | Interest component | Principal repaid | 
| 1 | 70000 | $18,465.82 | 7000 | $11,465.82 | 
| 2 | $58,534.18 | $18,465.82 | 5853.417634 | $12,612.41 | 
| 3 | $45,921.77 | $18,465.82 | 4592.177032 | $13,873.65 | 
| 4 | $32,048.12 | $18,465.82 | 3204.81237 | $15,261.01 | 
| 5 | $16,787.11 | $18,465.82 | 1678.711241 | $16,787.11 | 
b: In year 4, interest = $3204.81
WORKINGS
