XVII. TARE and TRETT.

In this Rule there are six Things to be observed, viz. 1. The Gross Weight. 2. Tare. 3. Trett. 4. Suttle. 5. Cloff. And, 6. The Net Weight.

1. The Gross Weight is the Whole Weight of the Goods, and that which they are packed up in.

2. Tare is an Allowance made to the Purchaser for the Weight of the Box, Bag, Barrel, or whatever contains the Goods bought, and is either

At so much in the whole Gross Weight;

At so much per Box, Bag, &c.—or,

At so much per Cent.

3. Trett is an Abatement of 4 lb. per 104 lb. and is the twenty-sixth Part allowed for Waste, Dust, &c. made by the Merchant to the Buyer.

4. Suttle is when the Tare is deducted from the Gross. 5. Cloff is an Allowance of 2 lb. to the Citizens of London, on every Draught above 3 cwt. on some Sorts of Goods, as Beaver, Galls, Madder, Argol, &c.

6. Net Weight is when all Allowance is deducted from the Gross.

Case 1. When the Tare is at so much in the Gross Weight, to find the Net.

RULE.

Subtract the Tare from the Gross, and the Remainder is the Net Weight.

EXAMPLES.

(1) What is the Net Weight of 24 Hogsheads of Tobacco, each weighing 6 cwt. 2 qrs. 17 lb. Gross? Tare in the Whole 17 cwt. 3 qrs. 27 lb.

(2) What is the Net Weight of 5 hhds. of Sugar, weighing as follows, viz.

Case 2. When Tare is at so much per Box, Bag, &c. to find the Net Weight.

RULE.

Multiply the Tare of each Box, Bag, &c. by the Numbers of Boxes, &c. the Product subtract from the Gross as before, and the Remainder will be the Net Weight.

EXAMPLES.

(3) What is the Net Weight of 8 Frails of Raisins, each weighing 2 cwt. 2 qrs, Gross, Tare at 22 lb. per Frail ? (4) What is the Net Weight of 40 Bales of Silk, each weighing 3 cwt. 27 lb, Gross, Tare at 18 lb. per Bale?

Case 3. When Tare is at so much per cwt. to find the Net Weight.

RULE.

Divide the whole Gross by the said Part or Parts that the Tare is of a cwt. and the Quotient thence arising will be the Tare, which, subtracted from the Gross, as before, will give the Net Weight.

EXAMPLES.

(5) What is the Net Weight of 22 Barrels of Figs, each 1 cwt. 1 qr. 17 lb. Gross, Tare at 14 lb. per cwt.? (6) What is the Net Weight of 9 hhds. of Sugar, each weighing 6 cwt. 2 qrs. 12 lb. Gross, Tare at 17 lb. per cwt.?

Case 4. When Trett is allowed with the Tare, to find the Net Weight.

RULE.

Find the Tare as before, and subtract it from the Gross ; the Remainder will be the Suttle, which divide by 26; and the Quotient will be the Trett, which subtract from the Suttle; the Remainder will be the Net Weight.

EXAMPLES.

(7) What is the Net Weight of 16 cwt. 3 qrs. Gross; Tare 1 cwt. I qr. 12 lb. and Trett 4 lb. per 104 lb. ? (8) In 27 Bags of Coffee, each weighing, Gross, 2 cwt. 3 qrs. 27 lb. Tare 13 lb. per 112 lb. and Trett 4 lb. per 104 lb. what is the Net Weight?

Case 5. When Cloff is allowed, to find the Net Weight.

RULE.

Divide the whole Gross by 168 2 lb. being 168th Part of 3 cwt. or 336 lb. or you may divide the Number of cwts. by 3, which brings them into 3 cwts. Then 2 lb. being allowed for every 3 cwt. so as many 3 cwts. as it produces, so many 2 lbs. it will allow, which divide by 56 the double Pounds in a cwt. the Quotient will be the Hundreds, and the Remainder will be so many 2 lbs. to which adding what may be allowed for the odd cwts. qrs. and lbs. of the given Weight, will make the whole Cloff, which subtract from the Gross, and the Remainder will be the Net Weight.

EXAMPLES.

(9) What will be the Net Weight of 5647 cwt. 3 qrs. 13 lb. Gross, allowing for Cloff 2 lb. for every 3 cwt.? (10, What is the Net Weight of 14 Barrels of Spices, weighing altogether 42 cwt. 3 qrs. Gross, allowing for Cloff 2 lb. per 3 cwt. ?

Case 6. When Tare, Trett, and Cloff, are allowed with any Quantity Gross, to find the Net Weight.

RULE.

For the Tare and Trett, proceed as in Case 4, and the Remainder, which was called the Net there, will be the

Suttle here, which to find the Cloff of, proceed as in the last Case.

EXAMPLES.

(11) What is the Net Weight of 15 cwt. 3 qrs. 20 lb. Gross, allowing for Tare 7 lb. per cwt. Trett 4 lb. per 104 lb. and Cloff 2 lb. for 5 cwt. ?

(12) What is the Net Weight of 4 hhds. of Sugar, weighing as follows, viz.

(13) The Nett Proceeds of a Hogshead of Barbadoes Sugar were 4/ 14s 6d. The Custom and Fees 21 8s 6d. Freight 22s 8d. Factorage 4s 9d. The gross Weight was 9 cwt. 3 qrs. 10 lb. Tare 1 lb. in 10. Pray then how was the Sugar rated in the Bill of Parcels?

(14) I have imported 80 Jars of Lucca Oil, each containing 1180 solid Inches. What came the Freight to at 4s 6d per cwt. Tare 1 lb. in 10, counting 74 lb. of Oil to the Wine Gallon of 231 Cubic Inches.

XVIII. SIMPLE INTEREST

IS that which arises only from the Principal, and is a Profit allowed by the Borrower to the Lender, for the Loan or Forbearance of any Sum of Money, for some determined Space of Time, and at any Rate (per Cent. per Annum) agreed upon; which, according to Law, must not exceed 51 for the Use or Interest of 100/ Principal, called Cent. for 12 Months, called Anuum.

The Amount is the Principal and Interest added together.

Note. The Rules for Simple Interest serve also for calculating Factorage, Brokerage, Insurance, purchasing of Stocks, or any Thing else, that is rated at so much per Cent.

Case 1. To find the Interest of any Sum of Money, for any Number of Years.

RULE.

Multiply the Principal by the Rate per Cent.; that Pro duct, divided by 100, will give the Interest for a Year, which multiply by the Number of Years given, and the Product will be the Answer. Or, by taking the aliquot Part or Parts with the given Rate that are in 100%.

EXAMPLES.

(1) What is the Interest of 824/ 18s 2d for a Year, at four per Cent, per Annum ?

(2) What is the Interest of 500/ for 4 Years, at 5 per Cent. per Annum ?

(3) What is the Amount of 264/ 4d. for 12 Years, at 5 per Cent. per Annum ?

Case 2. When the Rate per Cent. is 4, 4, or more than the Pounds given in the said Rate.

RULE.

Muitiply the Principal by the Pounds in the Rate per Cent. then take Parts for 1, 4, or 4, from the Principal, which add to the Product, and the Sum divide by 100, as before.

EXAMPLES.

(4) What is the Interest of 246/ 18s for a Year, at 44 per Cent. per Annum?

(5) What is the Interest of 140/ 10s for 7 Years, at 41 per Cent. per Annum ?

(6) What is the Amount of 470/ for 5 Years, at 33 per Cent. per Annum ?

COMMISSION

IS an Allowance from a Merchant to his Factor or Correspondent abroad, in buying and selling of Goods, and is at a certain Rate per Cent. according to the Custom of the Country where the Factor resides.