The scales of commerce and trade: ballancing betwixt the buyer and seller, artificer and manufacture, debitor and creditor, the most general questions, artificiall rules, and usefull conclusions incident to traffique: comprehended in two books. The first states the ponderates to equity and custome, all usuall rules, legall bargains and contracts, in wholesale ot [sic] retaile, with factorage, returnes, and exchanges of forraign coyn, of interest-money, both simple and compounded, with solutions from naturall and artificiall arithmetick. The second book treats of geometricall problems and arithmeticall solutions, in dimensions of lines, superficies and bodies, both solid and concave, viz. land, wainscot, hangings, board, timber, stone, gaging of casks, military propositions, merchants accounts by debitor and creditor; architectonice, or the art of building. / By Thomas Willsford Gent.

QUESTION XIX. There is a Lease of 25 years to come, set at 10 L rent per ann. and the Fine demanded is 150 L. the Tenant is willing to give 100 L, and a proportional annual revenue during the whole term, what wil be the rent required, the loan for money allowed at 6 L per centum per annum?

This does not vary essenti∣ally

	Decimals
1	07823
	5
2	3.91150
3	3 L 18 ss 2 ¾ D

from the former: for the Fine being diminished, the annual rent must be encrea∣sed: take the difference be∣twixt the two Fines, viz. 100 L, and 150 L, as 50 L the Decimal for the term of years 25 is .07823. which multiplied by 50, or by 5 (as in the first ta∣ble of the margent) the product in the second is 3. 91150. which reduced in the third row is 3 L 18 sh 2 ¾ D. the rent which 50 L will purchase for 25 year; which added to the former Annuity of 10 L per ann. makes the whole rent 13 L 18 sh 2 ¾ D, according to demand.