Example III. What coft 18 Fodder, 11 Hund. 17 lb of Lead at 97. 175. 1od. per Fodder? Preparation. Halve the Shillings or divide by 20 Hund. Ib Decimals to 11 17 per Tab. of 2) 17 [Dec. Values. 8 and 1 over. .6025 3.0077 .6102 Then 18.6102 at 97. 8s, and 1s. 10d. over. What come 8008 Oz. 18 dwts. 22 Grains of Gold to, at 37. 17s. 10d. per Oz. Preparation. The half of 17 s. is 8 and 1 over. Decimals to 18 dwts. is .9 to 22 Gra. .0458 31197 6 11 Answer as before. *See Table of Decimals for finding the Value of the Decimals of a L. Sterling. This Example is a fufficient Evidence of the Utility and Conciseness of the Table for finding the Value of Merchandize, &c. and likewife of the Decimal Tables of Money, Weights, and Measures; and I may venture to say, that, when by a little Study and Application the Tables become familiar, the moft intricate Queftions may be folved in a fourth Part of the Time, they can be done by the common Method of Practice, &c. Here follows the Ufe of the Tables for Standarding Gold and Silver. Example I. Admit an Ingot of Gold weighs 180 Oz. 18 dwts. 20 Grains, being 1 Carat 2 Grains fine, or better than Standard, required the Number of Standard Ounces, &c. it contains. Solution. In Table fhewing the Weight of Gold 1 Car. 2 Gra. fine, you will find upon the foregoing Principles as under. 194.8205 Parts Decimals to Oz. dwts. gr. •9416 194 16 10 found by Infpection thus: Double the firft Figure, and if the next is 5 or above it, add one and halve the remaining 2 Figures and call them fo many Grains, as in the above Example. The Double of 8 is 16 dwts. the Half of 20 is 10 or 10 Grains, and vice verfâ. Hh Example Example of Silver reduced into Standard. In 1000 Oz. 1o dwts. of Silver Bullion finer than Standard 10 dwts. how many Standard Ounces? N Oz. Pts. Against rooin Table for Silver under r stands 1047.297 left Hand 0.523 x ftands 1047.820 Answer 1047 Oz. 16 dwts. ferè. The Use of the Table of Days Decimals of a Year, in cafting up Intereft, Salaries, Wages, &c. Example. What is the Interest of 500l. for 147 Days at 41. per Cent. per Annum? 500 X 4 = 2000 Then Decimal to 147 Days is .4027397 2000 Point off, and ÷ 100 = 8.054794000 What come 289 Days Wages to at 7%. 10s, per Annum? And Sold by G. KEITH, in Gracechurch-Street. 'D 2 NEW and NEAT EDITIONS of UNCAN's Cicero's Orations, Latin and English, with Manner. Virgil, Horace, and Ovid, done in the fame 3 Clare's Introduction to Trade and Business, 8vo. 3s. 4 Dean's Practical Arithmetic, 8vo. 4s.' 5 Hayes's Broker's Breviate, izmo. 15 64. 6 7 Gentleman's Complete Book-keeper, 8vo. 4s. 8 Hatton's Comes Commercii, 8vo. 2s. 9 Hales's Vegetable Statics, 2 vols. 8vo. 12s. 10 Hudfon's New Introduction to Trade and Business, 12mo. Is. 6d. - French Scholar's Guide, 12mo. 35. 12 Haliday's London New Method of Arithmetic, 8vo. 35. 13 Kimber's Impartial Hiftory of England, 8vo. 6s. 14 Keill's Aftronomical Lectures, 8vo. 6s.. 15 Kennet's Roman Antiquities, 8vo. 5s. 16 Potter's Grecian Antiquities, 2 vol. 8vo. 10s. 17 Langham's Nett Duties of Merchandize, 8vo. 4s. 18 Martin's Complete Syftem of Decimals, 8vo. 55. Philofophical Grammar, 8vo. 65. 19 20 Webb's Complete Annuitant, 8vo. 5s. 21 22 Complete Negociator, 8vo. 12s. Tables for buying and felling Stocks, 8vo. 35. 23 Wilfon's Surveying Improved, 8vo. 6s. 24 Serle's Art of Writing, 12mo. Is. 25 Chambaud's Dialogues, French and English, 12mo. 15. 26 Dougharty's Mathematical Digefts, 4to. 125. 27 Capt. Falconer's Voyages and dangerous Adventures, 12mo. 35 28 Geography for Children, with Maps, 12mo. 15. 6d. 29 New Guide to Geography, with Maps, 12mo. 2s. 6d. 30 Hawney's Complete Measurer, 12mo. 2s. 6d. |