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" 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. "
The Scholar's Arithmetic: Or, Federal Accountant ... The Whole in a Form and ... - Σελίδα 201
των Daniel Adams - 1824 - 224 σελίδες
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Introduction to The National Arithmetic: On the Inductive System Combining ...

Benjamin Greenleaf - 1849 - 336 σελίδες
...for the payment 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 usuaHy adopted by merchants, but it is not perfectly...

Daboll's Complete Schoolmaster's Assistant: Being a Plain Comprehensive ...

Nathan Daboll, David Austin Daboll - 1849 - 260 σελίδες
...-Payments is the method of finding the mean time to pay at once several debts, due at different times. •RULE. Multiply each payment by the time at which...is due, then divide the sum of the products by the swm of the payments, and the quotient will* be the answ«r. EXAMPLES.. % . 1. A owes B $380, fo be...

Rudimentary arithmetic

James Haddon - 1849 - 144 σελίδες
...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...

Rainey's Improved Abacus: An Explanatory Treatise on the Theory and Practice ...

Thomas Rainey - 1849 - 334 σελίδες
...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 ; either days, months, or y tars, separately...

The National Arithmetic on the Inductive System: Combining the Analytic and ...

Benjamin Greenleaf - 1850 - 368 σελίδες
...same as $19 for -^ of 152 months, which is 8 months, as before. Hence the propriety of the following RULE.* — Multiply each payment by the time at which...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 in 2 months, $100 in 5 months,...

A New System of Arithmetic on an Improved Plan

Charles Guilford Burnham - 1850 - 350 σελίδες
...---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 : $100 in 8 months, $100...

The University Arithmetic: Embracing the Science of Numbers, and Their ...

Charles Davies - 1850 - 412 σελίδες
...payments.) Hence, to find the mean time, 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. EXAMPLES. 1. B owes A $600: $200 is to be paid in two months,...

The Speedy Calculator: Being a System of Arithmetic

Benjamin Naylor - 1850 - 334 σελίδες
...the medium time for the payment of the whole debt. From 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...

Introduction to the National Arithmetic ...

Benjamin Greenleaf - 1851 - 332 σελίδες
...for the payment 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, but it is not perfectly...

A Theoretical and Practical Arithmetic: Designed for Common Schools and ...

Daniel Leach - 1851 - 280 σελίδες
...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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