Difference between revisions of "Page:Organum mathematicum libris IX. explicatum (1668).djvu/211"
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<center> 16 septima. 20 Imperial. 2 septima. 2 <unclear>8/16</unclear> Imperial.</center><br> | <center> 16 septima. 20 Imperial. 2 septima. 2 <unclear>8/16</unclear> Imperial.</center><br> | ||
<center> EXEMPLUM IX. ARITHMETICUM.</center><br> | <center> EXEMPLUM IX. ARITHMETICUM.</center><br> | ||
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Revision as of 10:46, 14 February 2020
EXEMPLUM VI. MERCATORIUM.
Imperiales 5 faciunt florenos Franconicos 6; quaeritur, quot florenos faciant Imperiales 100. Dic: 5 Imper. dant florenos 6; 100 Imper. quot flor. Facr. 120.
Librae 100, quadrantes 3, unciae 2 pulveris emptae fuerunt florenis Rhenanis 25, crucigeris 30; quaeritur, quot librae seu centenaria pulverise mi possint florenis 100. Hic librae pulveris reduci debent ad quadrantes, multiplicando 100 per 4, et productae summae addendo 3, ut fiant quadrantes 403: et hi iterum reducendi sunt ad uncias, multiplicando eosdem quadrantes per 4, et summae addendo 2, ut fiant unciae pulveris 1614. Praeterea floreni reduci debent ad crucigeros, multiplicando 25 per 60, er summae productae addendo 30, ut fiant crucigeri 1530. Similter 100 floreni reduci debent ad 6000 crucigerorum, multiplicando florenos per 60. His factis, sic collocxari debent numeri.
Multiplicando secondo numero per tertium, habebis 9684000: his divisis per primum, habebis 6329 630/1530 uncias pulveris: quae reductae libras (dividendo scilicet 6329, omissa fractione, quae minus est quam una uncia, per 16) habebis libras 395 9/16, id est, tres centenarios pulveris, et insuper libras 95, et Paulo amplius quam dimidiam:
Ex hoc exemplo apparet, quomodo in similibus exemplis ac quaestionibus procedendum sit.
Quatuor mensium spatio indigeo in sumptus necessaries 20 Imperialibus; quot Imperialibus indigeo pro duabus septimanis? Reduc menses quatuor ad septimanas 16, et sic colloca numeros, et operare juxta Regulam Trium:
Limax invitaur ab hirundine ad prandium loco distante integro
