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Home > History and Archaeology > History > Welch's Improved American Arithmetic, Adapted to the Currency of the United States; To Which Is Added a Concise Treatise on the Menstruation of Planes and Solids
Welch's Improved American Arithmetic, Adapted to the Currency of the United States; To Which Is Added a Concise Treatise on the Menstruation of Planes and Solids

Welch's Improved American Arithmetic, Adapted to the Currency of the United States; To Which Is Added a Concise Treatise on the Menstruation of Planes and Solids


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About the Book

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1847 Excerpt: ...as many more, I should have 264; how many had he? Ans. 96. 6. I lent a friend a sum of money unknown, at 6 per cent. simple interest; at the end of 4-years I received for the principal and interest $496; what sum did I lend? Ans. $400 DOUBLE POSITION. Double Position is (') that which discovers the true number, or numbers sought, by making use of two supposed numbers. Rule.--(2) Take any two numbers and proceed with them according to the conditions of the question. (3) Place each error against its respective position or supposed number; if the error be too great, mark it with +; if too small, with--" (4) Multiply them cross-wise, the first positon by the last error, and the last position by the first error. (5) If they be alike, that is when both are greater, or both less than the g-iven number, divide the difference of the products by the difference of the errors, and the quotient will be the answer; but if the errors be unlike, (6) divide the sum of the products by the sum of the errors, and the quotient will be the answer. Questions.--1. What is Double Position?--2. What is the 1st step in the rule?--3. What is the 2d step?--4. What is the 3d step?--5. When are the Errors said to be alike, and if alike, how do you proceed?-. If tiw errors be unlike, that is, one larger and the other less, how do you proceed? These two marks or charcters signify thus: jjjj,"less EXAMPLES. 1. A man lying at the point of death, left to his three sons all his estate, viz. to F. half wanting 50 dollars; to G. one third; and to H. the rest, which was 10 dollaTs less than the share of 6. I demand the sum le L and each son's share. Ans. $360. Operation. Soppoae the sum 300 dollars. Aagin suppose the sum 900 dollars. Then 300--2--50--100 F.'s part. Then 900-=-2--50...


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Product Details
  • ISBN-13: 9781130179583
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 72
  • Spine Width: 4 mm
  • Width: 189 mm
  • ISBN-10: 1130179583
  • Publisher Date: 01 Mar 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 145 gr


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Welch's Improved American Arithmetic, Adapted to the Currency of the United States; To Which Is Added a Concise Treatise on the Menstruation of Planes and Solids
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