pound into 240 parts, and taking 80 of them. It is therefore £⁸⁰/₂₄₀ (107), but ⁸⁰/₂₄₀ = ⅓ (108); therefore, 6 s. 8 d. = £⅓.
EXERCISES.
| ⅖ of a day is | 9ʰ 36ᵐ |
|---|---|
| ·12841 of a day | 3ʰ 4ᵐ 54ᔆ·624 [45] |
| ·257 of a cwt. | 28ˡᵇˢ 12ᵒᶻ 8ᵈʳ·704 |
| £·14936 | 2ˢ 11ᵈ 3ᶠ·3856 |
221, 222. I have thought it best to refer the mode of converting shillings, pence, and farthings into decimals of a pound to the Appendix (See Appendix On Decimal Money). I should strongly recommend the reader to make himself perfectly familiar with the modes
given in that Appendix. To prevent the subsequent sections from being altered in their numbering, I have numbered this paragraph as above.
- The rule of addition11 of two compound quantities of the same sort will be evident from the following example. Suppose it required to add £192. 14. 2½ to £64. 13. 11¾. The sum of these two is the whole of that which arises from adding their several parts. Now
| ¾ d. + ½ d. | = | ⁵/₄ d. | = | £0 . 0 . 1¼ | (219) |
|---|---|---|---|---|---|
| 11 d. + 2 d. | = | 13 d. | = | 0 . 1 . 1 | |
| 13 s. + 14 s. | = | 27 s. | = | 1 . 7 . 0 | |
| £64 + £192 | = | = | 256 . 0 . 0 | ||
| The sum of all of which is | £257. 8 . 2¼ |
This may be done at once, and written as follows:
- £192.14. 2½
- 64.13.11¾
- £257. 8. 2¼
Begin by adding together the farthings, and reduce the result to pence and farthings. Set down the last only, carry the first to the line of pence, and add the