(82) 100) 47,24 . 4 . 3(£47 . 4 . 10¹¹/₁₀₀
| 20 | ||
|---|---|---|
| (228) | 4,84 | [52] |
| 12 | ||
| 10,11 | [53] |
| ( b ) | £47 . | 4 . | 10¹¹/₁₀₀ | Int. for one yr. |
|---|---|---|---|---|
| b × 6 | 283 . | 9 . | 0⁶⁶/₁₀₀ | |
| b × ⅓ | 15 . | 14 . | 11³⁷/₁₀₀ | |
| £299 . | 4 . | 0³/₁₀₀ | Int. for 6⅓ yrs. |
EXERCISES.
What is the interest of £105. 6. 2 for 19 years and 7 weeks at 3 per cent?
Answer, £60. 9, very nearly.
What is the difference between the interest of £50. 19 for 7 years at 3 per cent, and for 8 years at 2½ per cent?
Answer, 10s. (2½)d.
What is the interest of £157. 17. 6 for one year at 5 per cent?
Answer, £7. 17. 10½.
Shew that the interest of any sum for 9 years at 4 per cent is the same as that of the same sum for 4 years at 9 per cent.
- In order to find the interest of any sum at compound interest, it is necessary to find the amount of the principal and interest at the end of every year; because in this case (248) it is the amount of both principal and interest at the end of the first year, upon which interest accumulates during the second year. Suppose, for example, it is required to find the interest, for