CASE V. When Tare, Trett, and Cloff are allowed: Deduct the tare and trett as before, and divide the suttle by 168 (because 2 lb. is the Ts of 3 cwt.) the quotient will be the cloff, which subtract from the suttle, and the remainder will be the neat weight. EXAMPLES. 1. In S hogsheads of Tobacco, each weighing 15 cwt. 3 qrs. 23 lb. gross, tare 107 lb. per hogshead, trett 4 lb. per 104 lb. and cloff 2 lb. per 3 cwt. as usual; how much neat. 2. What is the neat weight of 26 cwt. 8 qrs. 20. gross tare 52b. the allowance of trett and cloff as usual? Ans. neat 25cwt. 1gr.5lb. 1oz. 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, 67. for the use of 1001. or 6 dollars for the use of 100 dollars for one year, &c. Principal, is the sun lent. Rate, is the sum per cent. agreed on. Amount, is the principal and interest addeti together. CASE 1. 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. 8d. for one year. at 61. per cent. per annum ? г £. S. d. 39 11 81 0112 Ans. £275. 6. 700 2. What is the interest of 2361. 10s. 44. for a year, at 5 percent. 3: What is the interest of 5711. 13s. 9d. for one year, per cent.? at 61. Ans. £34 6s. Ožd. 4. What is the interest of 21. 12s. 94d. for a year, at Ans. £0 Ss. 2d. FEDERAL MONEY. 5. What is the interest of 468 dols. 45 cts. for one year at 6 per cent. $ cts. 468, 45 6 28/10, 70-828, 10cls. 7m. Ans. Here I cut off the two right hand integers, which divide by 100 but to divide federal money by 108, 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 multiplica tion 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. $ cls. 155, 25 6 811, 50-86, 11ets. 5m. Ans. 7. What is the interest of 19 dolars 51 cents for one year at 5 per cent. ? Sets. 19, 51 5 97, 55-97cts. 5m. Ans. s. What is the interest of 456 dolars for one year, at 6 per cent. P ANOTHER METHOD. Write down the given principal in cents, which multiply by the rate, and divide by 100 as before, and you will have the interest for a year, in cents, and decimals of a cent, as follows: 9. What is the interest of $73, 65 cents for a year, at 6 per cent. ? Principal 7365 cents. 6 Ans. 441,90cts.441cts. or 84, 41cts. 9m. 10. Required the interest of $85, 45cts. for a year, at cent. ? Cents. To find the simple interest of any sum of money, number of years, and parts of a year. GENERAL RULE. for any 1st. Find the interest of the given sum for one year. 2d. Multiply the interest of one year by the given number of years, and the product will be the answer for that time. 3d. If there be parts of a year, as months and days, work for the months by the aliquot parts of a year, and for the days by the Rule of Three Direct, or by allowing 30 days to the month, and taking aliquot parts of the same. * By allowing the month to be 50 days, and taking aliquot parts thereof, you will have the interest of any ordinary sum sufficiently exact for common use; but if the sum be very large, you may say, As 265 days: is to the interest of one year :: so is the given number of days to the interest retired. EXAMPLES. 1. What is the interest of 751. 8s. 4. for 5 years and 2 months, at 61. per cent. per annum ? S. d. [ 75 8 £. s. d. 6 2mo.: 4 10 6 Interest for 1 year. 2. What is the interest of 64 dollars, 58 cents, for 3 years, 5 months, and 10 days, at 5 per cent. ? $64,59 Ans. 1112,191112ets. or $11, 12c. 1m. 3. What is the interest of 789 dollars for 2 years, at 6 per cent. ? Ans. 594, 68cts. 4. Of 37 dollars 50 cents for 4 years at 6 per cent. per annum ? Ans. 900cts. or $9 5. Of 325 dollars 41 cents, for 3 years and 4 months, at 5 per cent.? Ans. 254, 23cts. 5m. 6. Of 325l. 12s. 3d. for 5 years, at 6 per cent. P Ans. £97 13s. 8d. 7. Of 174l. 10s. 6d. for 5 and a half years at 6 cent. ? Ans. £36 15s. 8. Of 150 16s. 8d. for 4 years and 7 months, at 6 ent. ? Ans. £41 9s. 7d per per |