Cocker's Arithmetick: being a plain and familiar method suitable to the meanest capacity, for the full understanding of that incomparable art, as it is now taught by the ablest school-masters in city and country ... / By Edward Cocker, late practicioner [!] in the arts of writing, artihmetick, and engraving. Being that so long since promised to the world. Perused and published by John Hawkins, writing-master near St. George's church in Southwark, by the author's correct copy, and recommended to the world by many eminent mathematicians and writing-masters in and near London.

Edward Cocker

Date:: 1697

Credit: Cocker's Arithmetick: being a plain and familiar method suitable to the meanest capacity, for the full understanding of that incomparable art, as it is now taught by the ablest school-masters in city and country ... / By Edward Cocker, late practicioner [!] in the arts of writing, artihmetick, and engraving. Being that so long since promised to the world. Perused and published by John Hawkins, writing-master near St. George's church in Southwark, by the author's correct copy, and recommended to the world by many eminent mathematicians and writing-masters in and near London. Source: Wellcome Collection.

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Whereby I find that 43 /. at 12d. perl. and 24 Il) yi at rod. perl. and 241. at 6d. perl. and 48 1. at 4 ddl yx per J. will make a compofition of Sugar containings) ‘9: 144 f. worth 8 d. perl. ? 7 But as the branches are linked in the fecond order? ;,i the anfwer willbe 241. at 12¢. perl. and 48 /. at 10dd)}iy perl. and 481. at 6d. perl. and 241. at 4d. per Ll. ted, make the faid quantity, and to bear the faid price. And if you had worked as the Branches are linkec¢},. after the third order, then you would have found thec| dl quantity of 35 /. of each. : Queft. 3. A Vintner hath 4 forts of Wine, viz. Cast nary at 10 s. per Gallon, Malaga at 8 s. per gallon ‘if ba Rhenifh-wine at 6s. per gallon; and White-wine att, 45s. per gallon, and he is minded to make a CGompo--! fition of them all of 60 gallons that may be worthit” s fhillings per Gallon, I defire to know how much offf, each he muft have ? The numbers or terms being ranked according to thee) fecond Rule of this Chapter, the branches will be lin<<j ked as followeth, and will admit of no other mannerr| of coupling, becaufe there is but one branch that iss leffer than the Root, therefore all the reft muft bee! and 1, muft be fet: a- gainft 4 becaufe they are all coupled with it, and the difference between the Root (viz. §.). and 4, which is x, mutt be fet againft the 3 other, becaufe it is linked!) to them all; fo J find 1 gall.of Canary, 1 gallon off} Malaga, 1 gallon of Rhenifh Wine, and’ 9 gallons off} White-wine, prized as above being mingled together, | will be. worth ss. per gallon, the Sum being 12 gab: | lons, but there muft be do gallons, wherefore I fay, As 12 i8 to 1, fois 60 to ¢ gallons of Canary. As 12 is to 1, fois 60 to 5 gallons of Malaga. “As 1218 to 1, {0 is 60 to § gallons of Rhenith. As 12 28 to 9, fo is 60 to 4g. gall. of White-wine-. j BY... a linked unto it; and the § 10 | I Et differences between the 8 I Il Root andthe three firft > 6™= i rl branches , viz. To, 8, 4 | §35%. | 9 and 6, which are 5, 35 — 122] .

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