Socius mercatoris: or The merchant's companion: in three parts. The first, being a plain and easie introduction to arithmetick, vulgur and decimal, the extraction of the square and cube roots, with a table of 200 square roots, and their use in the resolution of square equations. The second, a treatise of simple and compound interest and rebate, with two tables for the calculation of the value of leases or annuities, payable quarterly, the one for simple, the other compound interest, at 6 per cent. per annum, with rules for making the like for any other rate. The third, a new and exact way of measuring solids in the form of a prismoid and cylindroid, with the frustums of pyramids and of a cone: whereunto is added, some practical rules and examples for cask-gauging. By John Mayne, philo-accomptant.
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Title
Socius mercatoris: or The merchant's companion: in three parts. The first, being a plain and easie introduction to arithmetick, vulgur and decimal, the extraction of the square and cube roots, with a table of 200 square roots, and their use in the resolution of square equations. The second, a treatise of simple and compound interest and rebate, with two tables for the calculation of the value of leases or annuities, payable quarterly, the one for simple, the other compound interest, at 6 per cent. per annum, with rules for making the like for any other rate. The third, a new and exact way of measuring solids in the form of a prismoid and cylindroid, with the frustums of pyramids and of a cone: whereunto is added, some practical rules and examples for cask-gauging. By John Mayne, philo-accomptant.
Author
Mayne, John, fl. 1673-1675.
Publication
London :: printed by W[illiam] G[odbid] for N. Crouch, in Exchange-Alley, over against the Royal-Exchange in Cornhill,
1674.
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Subject terms
Interest -- Tables -- Early works to 1800.
Interest rates -- Early works to 1800.
Cite this Item
"Socius mercatoris: or The merchant's companion: in three parts. The first, being a plain and easie introduction to arithmetick, vulgur and decimal, the extraction of the square and cube roots, with a table of 200 square roots, and their use in the resolution of square equations. The second, a treatise of simple and compound interest and rebate, with two tables for the calculation of the value of leases or annuities, payable quarterly, the one for simple, the other compound interest, at 6 per cent. per annum, with rules for making the like for any other rate. The third, a new and exact way of measuring solids in the form of a prismoid and cylindroid, with the frustums of pyramids and of a cone: whereunto is added, some practical rules and examples for cask-gauging. By John Mayne, philo-accomptant." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A50425.0001.001. University of Michigan Library Digital Collections. Accessed May 14, 2024.
Pages
REDUCTION.
REduction is twofold, viz. bringing greater denominations into smaller, and that by Multiplication, as Pounds into Shillings, Shillings into Pence, &c. Also lesser deno∣minations are reduced into greater, by Division as Pence into Shillings, Shillings into Pounds Minutes into Hours, Hours into Days, and Days into Years, &c.
Having any number of Pounds to reduc•• into Pence, multiply them by 240.
Example.
In 869 Pounds how many Pence?
〈 math 〉〈 math 〉Answ. 208560 Pence.
descriptionPage 21
In 2486 Shillings how many Farthings?
〈 math 〉〈 math 〉Answ. 119328 Farthings.
How many Minutes are there in 9476 Hours?
〈 math 〉〈 math 〉The Answer 568560 minutes.
How many Pounds, Shillings, and Pence, are contained in 22929 Farthings?
〈 math 〉〈 math 〉
descriptionPage 22
In 544542 Cubique Inches, how many Beer Barrels, Firkins, and Gallons?
Inches in 1 B. Bar. 10152)544542(53:2:5 Bar. firk. g. 〈 math 〉〈 math 〉 Inches in 1 Firkin 2538)6486 〈 math 〉〈 math 〉 Inches in 1 Gallon 282)1410 〈 math 〉〈 math 〉
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