The Prussian Calculator: By which All Business Calculations are Performed by One Rule. With an Appendix

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Power Press of E. Shepard, 1846 - 191 σελίδες
 

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Σελίδα 40 - The Rule for casting interest, where partial payments have been made, is to apply the payment, in the first place, to the discharge of the interest then due. If the payment exceeds the interest, the surplus goes toward discharging the principal, and the subsequent interest is to be computed on the balance of principal remaining due. If the payment be less than the interest, the surplus of...
Σελίδα 136 - There is a fish whose head is 10 inches long, his tail is as long as his head and half the length of his body, and his body is as long as his head and tail. What is the length of the fish...
Σελίδα 183 - TABLE. 10 Mills (m.) = 1 Cent . . ct. 10 Cents = 1 Dime . . d. 10 Dimes = 1 Dollar . $. 10 Dollars = 1 Eagle . E.
Σελίδα 184 - TROY WEIGHT. 24 grains (gr.) 1 pennyweight (pwt.) 20 pennyweights, 1 ounce (oz.) 12 ounces ... 1 pound (Ib.) Troy weight is used in weighing gold, silver, precious stones, etc. APOTHECARIES
Σελίδα 29 - If a man travel 240 miles in 12 days, when the days are 12 hours long, in how many days will he travel 720 miles, when the days are 16 hours long? Ans. 27 days.
Σελίδα 183 - Scale: 4 farthings (far.) = 1 penny (d.); 12 pence = 1 shilling (s.) ; 20 shillings — 1 pound (£). 156.
Σελίδα 147 - Ans. 10 feet. 16. A wall is 32 feet high, and a ditch before it is 24 feet wide ; what is the length of a ladder that will reach from the top of the wall to the opposite side of the ditch ? Ans.
Σελίδα 184 - TABLE. 16 Drams (dr.) make 1 Ounce, oz. 16 Ounces " 1 Pound, Ib. 25 Pounds " 1 Quarter, qr. 4 Quarters " 1 Hundred Weight, cwt. 20 Hundred Weight
Σελίδα 185 - ... yards, 1 rod, pole, or perch, rd. 40 rods, 1 furlong, fur. 8 furlongs, - . 1 mile, m. 3 miles, 1 league, leo.
Σελίδα 105 - To reduce a mixed number to an improper fraction. Multiply the whole number by the denominator of the fraction, and to the product add the given numerator.

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