EXAMP. How much Sterling money is equivalent to 3390 pezzos 16 soldi, of Genoa, exchange at 51½d. Sterling per pezzo?
| Soldi. | d. | Pez. soldi. |
|---|---|---|
| If 20 : 51½ :: 3390 | 16 | |
| 8 | 20 | |
| 160 | 4½ | 67816 |
| 415 |
339080
67816
271264
d. L. s. d.
160)28143640(175897½ = 732 18 1½
If Sterling money be given, it may be reduced or changed into pezzos of Genoa, by reversing the former operation.
Exchange money is reduced to lire money, by being multiplied by 5½, as follows:
| Pez. soldi. | Decimally. |
|---|---|
| 3390 16 | 3390.8 |
| 5½ | 5.75 |
| 16954 0 | 169550 |
| ½ = 1695 8 | 237356 |
| ¼ = 847 14 | 169540 |
Lires 19497 2
Lires 19497.100
And lire money is reduced to exchange money by dividing it by 5½.
| 12 Denari | } make | 1 foldi | s. d. |
| 20 Soldi | 1 piastra | = 4 6 Ster. |
Books and accounts are kept in piasres, foldi, and denari. The piastra here consists of 6 lire, and the lire contains 20 foldi, and the foldi 12 denari, and consequently exchange money is 6 times better than lire money. The course of exchange is from 47 d. to 58 d. Sterling per piastra.