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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_ , , I Torefolve this Queftion I multiply each paymer, mi by its time, viz, - | 50 L. multiplyed by 2 mon, PYOAUCCt cman § 00 gol multiplyed hy 4 mon. produceth 30.1, multiplyed by 6 mon, produ 200 CEE nm | BO eee. a The Sum of the Produét is—— 480 480 (the Sum-of the Produdts) by ry Quotient is3,2 months i itor the time of paying the whole Debr. Quel. 2. A Merchant hath owing him roool. to be | ~§paid as. foloweth, VIX 600 |. at 4 months, 200]. arf #5. months, and the refi (which is 200 /,) at na months; | aadhe agreeth with his Debior to make one payment pf the whole, I demand the time of Payment with- pour Damage to. Debtor or Creditor ? 600 1. multiplyed by 4 months i mm 2400 200 L. multiplyed by 6 months Wo 1300 20° 1. multiplyed by 12 months is 200 ate | | The Sum of the Prodi is a mee FOO 0 Bnd the Sum of the produds (60 Hy the whole Debt (ioce L.) quore me of paymentc of the whole Debt. wig) 3° The truch of this Rule fs thus manifeft,.if the ho Mterett of thar Money which is paid afipy the equated time) after ic is due, The Proof of the: wae qual co the incereft of thae-mo. Rule of Equation: HY which (by the equated time) af Payments... §paid (© much fooner than it is gre at any rate per C. then the Operation is true,others fe nor. Example, » elo the laft Queft. 600. fhould have ‘y, weNths, Dur ic is not difcharged till 6 Months after it. is due) where SY 2: months at 6 poe 0) being dividea: 8 6 months for the been paid ar 4. months-(thar is; fore its. intereft » per Anny is. 6 le and-chen . K 5 2909 fy

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