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" 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. "
The Youth's Assistant in Theoretic and Practical Arithmetic: Designed for ... - Page 82
by Zadock Thompson - 1838 - 164 pages
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Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - Arithmetic - 1840 - 264 pages
...find the mean lime 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...
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A New System of Arithmetic: In which is Explained and Applied to Practical ...

Calvin Tracy - Arithmetic - 1840 - 311 pages
...following rule : RULE. — Multiply each payment by the time which must elapse before it becomes due, and divide the sum of the products by the sum of the payments. 2. A. owes me $50, payable in 4 months ; $100, payable in 10 months ; and $150, payable in...
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A Practical Treatise on Arithmetic: Wherein Every Principle Taught is ...

George Leonard - 1841
...either debtor or creditor, merchants usually Multiply each debt by the time to elapse before it is due, and divide the sum of the products by the sum of the debts. Though this method is inaccurate it is easy, and experiment shows it may be employed without...
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Adams's New Arithmetic...: Arithmetic, in which the Principles of Operating ...

Daniel Adams - Arithmetic - 1848 - 306 pages
...6-j-days, Ans. Hence, To find the mean time of several payments, Multiply each sum by its time of payment, and divide the sum of the products by the sum of the payments. EXAMPLES FOR PRACTICE. 4. A western merchant owes in New York city $200, due in 5 months;...
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A Practical Treatise on Arithmetic, [etc.].

George Leonard - 1841
...either debtor or creditor, merchants usually Multiply each debt by the time to elapse before it is due, and divide the sum of the products by the sum of the debts. Though this method is inaccurate it is easy, and experiment shows it may be employed without...
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A system of arithmetic

John Husband (math. master, Berwick.) - 1841
...for the whole ? Ans. 7 months. EQUATION OF RATES. RULE.— Multiply each quantity by its rate, then divide the sum of the products by the sum of the quantities, and the quotient will be the rate of the compound. EXERCISES. 1. What is the average rate of 51 qr....
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A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

Charles Guilford Burnham - Arithmetic - 1841 - 312 pages
...75-rl5=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...
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A Practical Treatise on Arithmetic...: Combining the Useful Properties of ...

George Leonard - Arithmetic - 1841 - 340 pages
...either debtor or creditor, merchants usually Multiply each debt by the time to elapse before it is due, and divide the sum of the products by the sum of the debts. Though this method is inaccurate it is easy, and experiment shows it may be employed without...
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A Theoretical and Practical System of Arithmetic, etc

W. H. CRANK - Arithmetic - 1843 - 316 pages
...mean rate of the mixture. RULE. — Multiply each quantity by its value for a unit of the quantity, and divide the sum of the products by the sum of the quantities. (1) 10 galls, of brandy at 16s. 4d., were mixed with 36 at 8*., 45 at 6*., and 18 at 10*. Required...
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Arithmetic, Designed for Academies and Schools

Charles Davies - Arithmetic - 1843 - 12 pages
...payments.) Hence, we have the following RULE. Multiply each payment by the time before it becomes due, and divide the sum of the products by the sum of the payments : the quotient will be the mean time. 2. B owes A $600 : $200 is to be paid in two months,...
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