have £33. 12. 3 more than B.
In the following table the quantities written opposite to each other are the same: each line furnishes two exercises.
| £15 . 18 . 9½ | 15302 farthings. |
|---|---|
| 115ˡᵇˢ 1ᵒᶻ 8ᵈᵚᵗ | 663072 grains. |
| 3ˡᵇˢ 14ᵒᶻ 9ᵈʳ | 1001 drams. |
| 3ᵐ 149 yds 2ᶠᵗ 9 in | 195477 inches. |
| 19ᵇᵘ 2ᵖᵏˢ 1 gall 2 qᵗˢ | 1260 pints. |
| 16 ʰ 23ᵐ 47ˢ | 59027 seconds. |
- The same may be done where the number first expressed is fractional. For example, how many shillings and pence are there in ⁴/₁₅ of a pound? Now, ⁴/₁₅ of a pound is ⁴/₁₅ of 20 shillings; ⁴/₁₅ of 20 is
| 4 × 20 | , or | 4 × 4 | (110), or | 16 | , |
|---|---|---|---|---|---|
| 15 | 3 | 3 |
or (105) 5⅓ of a shilling. Again, ⅓ of a shilling is ⅓ of 12 pence, or 4 pence. Therefore, £⁴/₁₅ = 5s. 4d.
Also, ·23 of a day is ·23 × 24 in hours, or 5ʰ·52; and ·52 of an hour is ·52 × 60 in minutes, or 3ᵐ·2; and ·2 of a minute is ·2 × 60 in seconds, or 12ˢ; whence ·23 of a day is 5ʰ 31ᵐ 12ˢ.
Again, suppose it required to find what part of a pound 6 s . 8 d . is. Since 6 s. 8 d. is 80 pence, and since the whole pound contains 20 × 12 or 240 pence, 6 s. 8 d. is made by dividing the