EXAMPLES. £ s. d. 1. What is the interest of 751. 8s. 4d. for 5 years and 2 months, at,6l. per per annuin ? 5 4152 10 0 20 22 12 6 do. for 5 years. 0 15 1 do. for 2 inonths. 1050 12 £2377 Ans. 600 2. What is the interest of 64 dollars, 58 cents, for 3 years, 5 months, and 10 days, at 5 pct cent. ? $ 64,58 5 322,90 Interest for 1 year in cents, por S [Case I 968,70 do. for 3 years. 107,63 do. for 4 months. 26,90 do. for 1 month. 8,96 do. for 10 days. 4 mo. 1 mo. $ 10 days, } per cent. ? Ans. 1112,19=1112cts. or $11, 12c. 11pmi. 3. What is thic interest of 789 dollars for 2 ycars, at 6 Ans. 894, 68cts. 4. Of 37 dollars 50 cents for 4 years at 6 per cent. per annum ? Ans. 900cts. or. 89 5. Of 325 dollars 41 cents, for 3 years and 4 months, at 5 per cent. ? Ans. $54, 23cts. 51. 6. Of 325l. 12s. 3d. for 5 years, at 6 per cent. ? Ans. £97 135. 8d. 7. Of 1741. 10s. 6d. for 3 and a half years at 6 per cent. ? Ans. £36 135. 8. Of 1501. 16s. 8d. for 4 years and 7 months, at 6 per cent. ? Ins. £41 9s. 7d. a 9. Oi i dollar for 12 years at 5 per cent. ? us. 60cts. 10. Of 215 doilars Stcts. for 4 and a half years, iti 3 and a half per Ans. $33, 9icts. Om, 11. What is the amount of 324 dollars, CI cents, for 5 year's and 5 months, at 6 per cent. ? Ans. $430, 10cts. 8 200 m. 12. What will 3000l. arnount to in 12 years and 10 nionths, at 6 per cent. ? ins. £5510. 13. What is the interest of 2371. 5s. 1d. for 1 year and s quarters, at 4 per cent. ? Ans. 4:18 Os. 1d. 3qrs. it. What is the interest of dollars, 87 oents for 2 years and a half, at 7 per cent. per annum ? Ans. $48, 97 cts. 74m 15. What will 2791. 135. Sd. amount to in 3 years and a half at 5 per cent. ? Ans. £531 1s. 6d. 16. What is the amount of 341 dols. 60 cts. for 5 years and s quarters, àt : and a half per cent. per annum ? Ans. S488, 9ilcts. 17. What will 750 dols. amount to at 6 cent: in 5 years, 7 inontlis and 12 days, or of a year : Hus. $975, 99cts. 18. What is the interest of 18951. at 5 per cent. per annum, from March 4th, 1796, to March 29th, 1799, (alo lowing the year to contain 365 days :) Airs. f 280. NOTE.—The Rules for Simple Interest serve alsa to calculate Commission, Brokerage, Insurance, or any thing else estimates at a rate per cent. per 305 COMMISSION, IS an allowance of so much per cent. to a factor or cau. respondent abroasi, for buying and selling goods for his employer. EXAMPLES 1. What will the commission of 8131, 10s. come to at 5 per cent. ? 6:00 £42 3s. 60. 2. Required the commission on 964 duls. 90 cts. at 21 per cont.: Ins. $21, 71 cts. 3. What may a factor demand on 14 per cent. commission, for laying out 3568 dulars ? Ans. 862, 44cts. BROKERAGE, IS an allowance of so much per cent. to persons assisting merchants, or factors, in purchasing or selling goods. EXAMPLES. s. 1. What is the brokerage of 7501. 8s. 4d. at 6s. 8u. per cent. ? £. d. 750 8 4 Jlere I first find the brokerage at 1 1 pound per cent. and then for the given rate, which is į of a pound. s. d. £s. s. d. grs. 3)7 10 1 Ans. £2 10 0 11 ,1,00 2. What is tne brokerage upon 4125 dols. at or 75 ents per cent. ? Añs, 830, 93cts. 7 fm. 3. If a broker sells goods to the amount of 5000 dols. that is bis demand at 65 cts. per cent. ? Ans. $32, 50cts 4. What may a broker demand, when lie sells goods to the value of 5ušl. 175. 1011: and I allow lim 14 per cent. ? Ans. £7 128. 81. INSURANCE, IS a premium ar so niuch per cento allowed to persons ad offices, for making good the loss of ships, houses, mercuandize, &c. which may happen froni storms, fire, &c. EXAMPLES. cent.? 1. What is the insurance of 7251. Ss. 10d. at 124 per ins. £ 90 13s. 74d. en llat is the insurance of an East-India ship and calg, valued at 123425 dollars, at 155 per cent. ? Nils. $19130, 87 cts. 5m. S. A man's house estimated at 5500 dollars, was insuled against fire, for 1:per cent. a year; what insurance did he annually pay? Hrs. 861, 25cts. SHORT PRACTICAL RULES, or months and days. RULE. 1. If the principal consists of pounds only, cut off the unit figure, and as it then stands it will be the interest for one month, in shillings and decimal parts. 2. If the principal consists of pounds, shillings, &c. re. duce it to its decimal value; then remove the decimal point one place, or figure, further towards the left hand, and as the decimal then stands, it will shew the interest for one month, in shillings, and deatmals of a shilling. EXAMPLES. 1. Required the interest of 541. for seven months and len days, itt. 6 per cent 6 S: 10 days=1;5,4 Interest for one month. 7 57,8 ditto for a months. 1,8 ditto for 10 days. 12 2. What is the interest of 421. 10s. or 11 months, at 6 per cent. I £. S. £ 42,5 decimal valuo £. s. d. . 3. Required the interest of94l. 7s. Cd. for one year, five months and a half, at & pr cent. per annum." 6 Ans. £8 5s. 1d. 3,5qrs. 4. What is the interestf 121. 1$s. for one third of a month; at 6 per cent. ? Ans. 5,16d. 11. FORFEDERAL MONEY. RULE. 1. Divide the rincipal by 2, placing the separatris 2:3 usual, and the potient will be the interest for one month in cents, and ecimals of a cent; that is, the figures at the lest of the cparatrix will be cents, and those on the right, decimo of a cent. 2. Multły the interest of one month by the given num: ber of months, or months, and decimal parts thereof, or for de dys take the even parts of a month, &c. |