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" 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. "
Davies' University Arithmetic: Embracing the Answers, and a Full Analysis ... - Page 278
by Charles Davies - 1861 - 336 pages
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The American Equater: Or, Arithmetic Simplified in which Equations are Used ...

Conley Plotts - Arithmetic - 1848 - 278 pages
...Payments. Multiply each payment by its TIME (in the same denomination,) and divide the SUM of these products by the SUM of the payments, the QUOTIENT will be the EO.UATED TIME in months if the time of the payments were months, or days, if days, &c. NOTE. — From...
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Rainey's Improved Abacus: An Explanatory Treatise on the Theory and Practice ...

Thomas Rainey - Arithmetic - 1849 - 320 pages
...Multiply the sum of each payment by its time, add the several payments: then, add their products ; and divide the sum of the products, by the sum of the payments. The several periods of time must be of the same denomination ; tither days, months, or y'ars, separately...
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Rudimentary arithmetic

James Haddon - Arithmetic - 1849 - 144 pages
...payments, due at different times, should be paid at once. BULE. Multiply each payment by its time, and divide the sum of the products by the sum of the payments. PARTNERSHIP. Partnership or Fellowship is a method of finding the shares in the profit or loss of several...
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The University Arithmetic: Embracing the Science of Numbers, and Their ...

Charles Davies - Arithmetic - 1850 - 412 pages
...dividing 48 (the sum of the products) by $6, (the sum of the payments.) Hence, to find the mean time, Multiply each payment by the time before it becomes...the sum of the payments : the quotient will be the mean time. EXAMPLES. 1. B owes A $600: $200 is to be paid in two months, $200 in four months, and $200...
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A New System of Arithmetic on an Improved Plan

Charles Guilford Burnham - 1850 - 350 pages
...seventy-five months, 75 ---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 as follows...
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The Speedy Calculator: Being a System of Arithmetic

Benjamin Naylor - 1850 - 334 pages
...the above illustration we infer the following RULE. Multiply each payment by the time at which it is due, and divide the sum of the products by the sum of the payments, and the quotient will be the equated time. 2. E owes G $2400, of which $480 are to be paid at 5 months,...
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Arithmetic on the Productive System: Accompanied by a Key and ..., Volume 1

Roswell Chamberlain Smith - Arithmetic - 1850 - 314 pages
...1. RECIPROCATE, [L. recipricus.'} To exchange ; to interchange; to give and return mutually. several products by the sum of the payments; the quotient will be the mean or equitable time for the payment of the whole.* 11. A owes B $200 to be paid in 6 months, $300...
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The National Arithmetic on the Inductive System: Combining the Analytic and ...

Benjamin Greenleaf - Arithmetic - 1850 - 368 pages
...the propriety of the following RULE.* — Multiply each payment by the time at which it is due; then divide the sum of the products by the sum of the payments, and the quotient will be the true time required. • 2. A owes B $ 300, of which $ 50 is to be paid...
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A Theoretical and Practical Arithmetic: Designed for Common Schools and ...

Daniel Leach - Arithmetic - 1851 - 280 pages
...average time for the payment of several sums, due at different periods. 244. RULE. Multiply each sum by the time before it becomes due, and divide the sum of the products by the sum of the payments. OBS. 1. This rule has "been considered by many as incorrect ; but it is as correct as any rule founded...
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Introduction to the National Arithmetic ...

Benjamin Greenleaf - 1851 - 332 pages
...of the whole. Hence the following RULE. — Multiply each payment by the time before it is due, then divide the sum of the products by the sum of the payments, and the quotient will be the true time required. NOTE 1. — This is the rule usually adopted by merchants,...
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