VII. Given a certain sum per day, to find how much it will amount to in a year. RULE.-Consider the pence as pounds, and every farthing as five shillings; add to this sum its half and five times the daily sum. Thus, 4s. 2 d. a day will in a year amount to £50, 10s. + £25, 5s. + £1, ls. 04d. or £76, 16s. 01d. Find the amount in a year, or 365 days, of VIII. Given a certain sum per working day, to find how much it will amount to in a year. RULE. Add together as many pounds, crowns, shillings, and pence as there are pence in the daily sum. Thus, 3s. 5d. per working day will in a year amount to £4141 crowns + 41s. + 41d. or £53, 9s. 5d. Find what the following rates per working day will amount to in a year, or 313 days: (1.) 1s. 3d. (5.) 2s. 9d. (9.) 4s. 6d. (2.) 1s. 10d. 5s. Od. (3.) 2s. 2d. (7.) 3s. 10d. (11.) 6s. 8d. (4.) 2s. 6d. 10s. 6d. Edinburgh: Printed by W. and R. Chambers. CHAMBERS'S ARITHMETICAL EXERCISES FOR ALL CLASSES OF SCHOOLS By JOHN S. MACKAY, M.A. SECOND MATHEMATICAL MASTER IN THE EDINBURGH ACADEMY PART III. EXERCISES IN THE COMPOUND RULES CHAMBERS'S ARITHMETICAL EXERCISES. PART III. TABLES OF. WEIGHTS AND MEASURES. AVOIRDUPOIS WEIGHT. Used for weighing all articles except gold, silver, &c. 16 Drams (dr.)..........make 1 ounce (oz.) 16 Ounces..... 28 Pounds... 4 Quarters.. 20 Hundredweights..... 1 pound (lb.). It is useful to remember that 1 quarter (qr.). 1hundredweight (cwt.). 14 Pounds...................................make 1 stone. 8 Stones... 1 hundredweight. 112 Pounds........................................ 1 hundredweight. 1 Pound avoirdupois contains 7000 grains. TROY WEIGHT. Used for weighing gold, silver, jewels, and certain liquids. 24 Grains (gr.)............make 1 pennyweight (dwt.). 20 Pennyweights........ 1 ounce (oz.). 12 Ounces... "1 1 pound (lb.). 1 Pound troy contains 5760 grains. APOTHECARIES' WEIGHT, As generally found in Arithmetical Tables, is now superseded. The British Pharmacopoeia gives the following table: APOTHECARIES' FLUID MEASURE. 60 Minims (m)................................make 1 fluid drachm_(fil.3). 8 Fluid drachms...... 1 fluid ounce (fl.3). 1 pint (0). 1 gallon (C). LINEAL MEASURE. Used for measuring lengths or distances without regard to breadth. 12 Inches (in.)...........make 1 foot (ft.). 4 Inches make 1 hand (used in measuring horses). 6 Feet.... п 1 fathom { (used in sounding the ocean or mines). Mechanics have the inch divided into halves, quarters, and eighths; scientific men divide it into tenths, hundredths, &c. Land-surveyors, in measuring distances, use a chain which is 22 yards or 4 poles long, and is divided into 100 links. CLOTH MEASURE. 2 Inches (in.)..............................make 1 nail (nl.). 1 quarter (qr.). "1 1 yard (yd.). The English ell, which is seldom used, contains 5 quarters. |