Nicola borrows a $24000 loan from Steve. She agrees to pay interest on the loan at the end of each year for 8 years, and will repay the capital by accumulation of a sinking fund. The sinking fund deposits are such that the net amount of the loan decreases linearly, resulting in a level repayment of principal at the end of each year. The interest rate on the loan is 5% over the first 4 years and 4.5% over the next 4 years. The sinking fund earns a fixed 4% interest rate per annum.
(a) Find the total amount of the 5th installment paid by Nicola. (Ans. $3600)
(b) Compare this with the case when Nicola repays the loan with 8 equal annual installments.
Principle amount repayment/year will be=24000/8=3000/yr
Year | Amount o/s | Interest(5%/4.5% | Total | Repayment amount | Balance |
1 | 24000 | 1200 | 25200 | 4200 | 21000 |
2 | 21000 | 1050 | 22050 | 4050 | 18000 |
3 | 18000 | 900 | 18900 | 3900 | 15000 |
4 | 15000 | 750 | 15750 | 3750 | 12000 |
5 | 12000 | 540 | 12540 | 3540 | 9000 |
6 | 9000 | 405 | 9405 | 3405 | 6000 |
7 | 6000 | 270 | 6270 | 3270 | 3000 |
8 | 3000 | 135 | 3135 | 3135 | 0 |
Total | 29250 |
b) when Nicola repays the loan with 8 equal annual installments.=29250/8=3656.25/installment
Difference between two=3656.25-3540=116.25
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