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2. Divide the suttle by 26, and the quotient will be the trett, which subtract from the suttle, and the remainder will be the neat weight.

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* This is the trett allowed in London. The maron a dividing by 26 is because 4 lb. is of 104 lb. tue if the trett is at any other rate, other parts must be talcen, accorul ing to the rate proposed, &c.

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CASE V. When Tare, Trett, and Cloff are allowed : Dedict the tare and trett as before, and livickass the suttle by 168 (becausç 2 lbs. is the th of Scwt.) the qui, tient will be the cloit, which subtract froin thic şuttle, and the remainder will be the neat weight.

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Ans. 4175 neat weight. 2. What is the neat weight of 26 cwt. S grs. 20 lb. gross tare 52 lb. the allowance of trett and cloft as usual IP Ansneat 25cut. Igr. 5lb. 10%. nearly ; omitting

further fractions.

INTEREST. INTEREST is of two kinds; Simple and Compound.

- SIMPLE INTEREST. Simple Interest is the sum paid by the borrower to the lender for the use of money lent; and is generally at a certain rate per cent. per annum, which in several of the United States is fixed by law at 6 per cent. per annum ; that is, 61, for the use of 100l. or 6 dollars for the use of 100 dollars for one year, &c.

Principal, is the sum lent.
Rate, is the sum per cent. agreed on,
Amount, is the pimcipal and interest added together.

CASE I..
To find the interest of any given sum for one year.

RULE. Multiply the principal by the rate per cent. and divide the product by 100; the quotient will be the answer.

EXAMPLES. 1. What is the interest of 391. 11s. 8}d. for one year at 6l. per cent. per annum ?

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3. What is the interest of 5711. 13s. Id. for one year, at 61. per cent. ?

Ans. £ 54 6s. vid. 4. What is the interest of 21. 128. 9d. for a year, at 6l. per cent. ?

Ans. £0 55. 2d.

FEDERAL MONEY. 5. What is the interest of 468 dols. 45 cts. for one year at 6 per cent. ? $ cts.

468, 45

28|10,70=828, 10cts. 7m. Ans. Here I cut off the two right hand integers, which divide by 100: but to divide federal money by 100, you need only call the dollars so many cents, and the inferior denominations decimals of a cent, and it is done.

Therefore you may multiply the principal by the rate, and place the separatrix in the product, as in multiplication of federal money, and all the figures at the left of the separatrix, will be the interest in cents, and the first figure on the right will be mills, and the others decimals of a mill, as in the following

EXAMPLES. 6. Required the interest of 135 dols. 25 cts. for a year at 6 per cent. $ cts.

135, 25

811, 5)=88, 11cts. 5m. Ans. .. What is the interest of 19 dollars 51 cents for one year at 5 per cent. $ cts

:. 19, 51

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