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 Βιβλία Βιβλία Multiply each payment by its term of credit, and divide the sum of the products by the sum of the payments ; the quotient will be the average term of credit. Introduction to arithmetic - Σελίδα 114
των Chambers W. and R., ltd - 1854
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The Youth's Assistant in Theoretic and Practical Arithmetic: Designed for ...

Zadock Thompson - 1832 - 168 σελίδες
...for practical purposes. 189. RULE. — Multiply each of the payments by the time in which it is due, and divide the sum of the products by the sum of the payments; the quotient will be the equated time of payment. •__ - ''• f 1 QUESTIONS FOR PRACTICE.... ## The Youth's Assistant in Theoretic[!] and Practical Arithmetic ...

Zadock Thompson - 1832 - 168 σελίδες
...for practical purposes. 189. RULE. — Multiply each of the payments by the time in which it is due, and divide the sum of the products by the sum of the payments ; the quotient will be the equated time of payment QUESTIONS FOR PRACTICE. 2. A owes B \$380,... ## A system of practical arithmetic, comprehending numerous rules and examples ...

...of the several simples, to find the rate of the mixture. RULG. Multiply each quantity by its rate, and divide the sum of the Products by the sum of the quantities. (1) 8 Ibs. of sugar at 7d. per Ib. were mixed with 5 Ibs. at 8d. and 7 Ibs. at Is. Required the price... ## The Tutor's Assistant: Being a Compendium of Practical Arithmetic, for the ...

Francis Walkingame - 1833
...prices being given, to find the mean price of the mixture. RULE. Multiply each quantity by its price, and divide the sum of the products by the sum of the quantities.* (1) A grocer mixed 4 cwl. of sugar, at 56.?. per cwt. with 7 cwt. at 43i. per cwl. and 5 cwt. at 37*.... ## Adam's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - 1833 - 264 σελίδες
...find the mean time for several payments,' — RULE : — Multiply each sum by its time of payment, and divide the sum of the products by the sum of the payments, and the quotient will be the answer. Note. This rule is founded on the supposition, that... ## The North American Arithmetic: for advanced scholars. Part third

Frederick Emerson - 1834 - 288 σελίδες
...sum of them by the sum of the debts. RULE. Multiply each debt by the time, in which it is payable, and divide the sum of the products by the sum of the debts: the quotient will be the equated time. 1. If I owe you 50 dollars payable in 4 months, 75 dollars... ## A brief compendium of arithmetic

Benjamin Snowden - 1835
...Is when the quantities and prices are given. RULE. — Multiply each quantity by its rate or price, divide the sum of the products by the sum of the quantities, and the quotient will be the mean price. Proof by Division. Examples. A farmer mixed 20 bushels of... ## A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

Charles Guilford Burnham - 1837 - 256 σελίδες
...75-r-15=5 months, the answer. Hence the RULE. Multiply each payment by the time when it becomes due, and divide the sum of the products by the sum of the payments, and the quotient will be the time required. 2. A merchant has owing him \$420, to be paid... ## An Essay on Probabilities, and Their Application to Life Contingencies and ...

Augustus De Morgan - 1838 - 306 σελίδες
...of 4 and 1, and the method of finding an average is this : multiply every observation by its weight and divide the sum of the products by the sum of the weights. Such a method was adopted before the theory of probabilities was applied to the subject, as... ## Mental and Practical Arithmetic

Charles Davies - 1838 - 288 σελίδες
...the whole ? OPERATION. We here multiply each sum 200 x 2 = 400 by the time at which it becomes due, and divide the sum of the products by the sum of the payments. 200x4= 800 200x6 = 1200 600 )24|00 Ans. 4 months. . 3. A merchant owes \$600, of which \$100...