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£. s. 843 10

5

42 17 10

20

3150

12

BROKEAGE.

600

£42 3s. 6d.

2. Required the commission on 964 dols. 90 cts. at 21 per cent.?

Ans. $21, 71 cts.

*.

3. What may a factor demand on 13 per cent. commission for laying out 3568 dollars? Ans. $62, 44 cts.

£ s. d.

750 8 4
1

Or thus,
£. S.

£5 is)843 10

Ans. £42 3 6

BROKERAGE,

IS an allowance of so much per cent. to persons assisting merchants, or factors, in purchasing or selling goods.

7,50 8 4

20

EXAMPLES.

1. What is the brokerage of 750l. 8s. 4d. at 6s. 8d. per cent. ?

10,08
12

Here I first find the brokerage at 1 pound per cent. and then for the given rate, which is of a pound.

s. d. £. s. d. grs.
68=1)7 10 10

Ans. £2 10 0 11

1,00

2. What is the brokerage upon 4125 dols. at or 75 cents Ans. $30, 93 cts. 71 m. per cent.? 3. If a broker sell goods to the amount of 5000 dollars, what is his demand at 65 cts. per cent.?

Ans. $32, 50 cts.

4. What may a broker demand, when he sells goods to the value of 5087. 17s. 10d. and I allow him 1 per cent.? Ans. £7 12s. 8d.

ENSURANCE,

IS a premium at so much per cent. allowed to persons and offices, for making good the loss of ships, houses, merchandise, &c. which may happen from storms, fire, &c.

EXAMPLES.

1. What is the ensurance of 7251. 8s. 10d. at 12 per cent.? Ans. £90 13s. 74d. 2. What is the ensurance of an East-India ship and car go, valued at 123425 dollars, at 15 per cent.?

Ans. $19130, 87 cts. 5 m. 3. A man's house estimated at 3500 dols., was ensured against fire, for 13 per cent. a year: what ensurance did he annually pay? Ans. $61, 25 cts.

Short Practical Rules for calculating Interest at 6 per cent. either for months, or months and days.

1. FOR STERLING MONEY.

RULE.-1. If the principal consist 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 consist of pounds, shillings, &c. reduce 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 show the interest for one month in shillings and decimals of a shil. ling.

EXAMPLES.

1. Required the interest of 547. for seven months and ten days, at 6 per cent.

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2. What is the interest of 427. 10s. for 11 months, at 6 per cent.?

£.

S.

£.

42 10 =

42,5 decimal value.

Therefore 4,25 shillings interest for 1 month.

11

£. S. Ans. 46,75 Interest for 11 mo. = 2 6

d.

9

3. Required the interest of 947. 7s. 6d. for one year, five months and a half, at 6 per cent. per annum?

Ans. £8 5s. 1d. 3,5grs.

4. What is the interest of 121. 188. for one third of a month, at 6 per cent.? Ans. 5,16d.

II. FOR FEDERAL MONEY.

RULE.-1. Divide the principal by 2, placing the separatrix as usual, and the quotient will be the interest for one month in cents, and deci mals of a cent; that is, the figures at the left of the separatrix will be cents, and those on the right, decimals of a cent.

2. Multiply the interest of one month by the given number of Kaonths, or months and decimal parts thereof, or for the days take the even parts of a month, k,

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EXAMPLES.

1. What is the interest of 341 dols. 52 cts. for 7 months! 2)341,52

Or thus, 170,76 Int. for 1 month.
X7,5 months.

170,76 Int. for 1 month.

71

1195,32 do. for 7 mo.
85,38 do. for

mo.

cts. m.

1280,700cts. =12,80 7 1280,70 Ans. 1280,7cts.-$12, 80cts. 7m.

2. Required the interest of 10 dols. 44 cts. for 3 years, 5 months, and 10 days.

FACE

2)10,44

5,22

85380

119532

10 days=1) 5,22 interest for 1 month.

41 months.

208,8

214,02 ditto for 41 monthis.
1,74 ditto for 10 days.

215,76 cts. Ans. $2, 15 cts. 7 m.+

3. What is the interest of 342 dollars for 11 months?

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Ans. 1881 cts. $18, 81 cts.

NOTE.-To find the interest of any sum for two months, at 6 per cent. you need only call the dollars so many cents, and the inferior denominations decimals of a done: Thus, the interest of 100 dollars for two months, is ent, and it is 100 cents, or one dollar; and $25, 40 cts. is 25 cts. 4 m, &c. which gives the following

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RULE II.-Multiply the principal by half the number of mouths, and the product will show the interest of the given time, in cents and docimals of a cent, as above.

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EXAMPLES.

1. Required the interest of 316 dollars for 1 year and 10 months. 11=the number of mo. Ans. 3476 cts. =$34, 76 cts.

2. What is the interest of 364 dols. 25 ets. for 4 months

$ cts. 364, 25

2 half the months.

728, 50 cts. Ans.$7, 28 cts. 5 m.

III. When the principal is given in federal money, at 6 per cent. to find how much the monthly interest will be in New-England, &c. currency.

RULE.-Multiply the given principal by ,03, and the product will be the interest for one month, in shillings and decimal parts of a shilling.

EXAMPLES.

1. What is the interest of 325 dols. for 11 months?

,03

9,75 shil. int. for one month x11 months.

Ans. 107,25 s.=£5 7s. 3d.

1. What is he interest in New-England currency of 31 dols. 68 cts. for 5 months?

Principal 31,68 dols.

,03

,9504 Interest for one month. 5

Ans. 4,7520s.4s. 9d.

12

9,02-16

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