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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

Dictionary of the Mathematical and Physical Sciences, According to the ...

James Mitchell - Mathematics - 1823 - 576 pages
...bodies placed in a right line. Multiply each body by its distance from some fixed point in the line, and divide the sum of the products by the sum of the bodies, the result is the distance of the centre from the point. Prop. 2. If perpendiculars be drawn...

The Youth's Assistant in Theoretick and Practical Arithmetic

Zadock Thompson - Arithmetic - 1826 - 164 pages
...shall be sustained by either party. RULE.t — Multiply each payment by the time at which it is. due, and divide the sum of the products by the sum of the payment, and the quotient will be the time required. * You divide by 26, because the trett is one twenty-sixth....

Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - Arithmetic - 1828 - 264 pages
...To find the mean time for several payments, — ROLE : — 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...

Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - Arithmetic - 1828 - 264 pages
...To 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 Practical Arithmetic: In which the Principles of Operating by Numbers ...

Arithmetic - 1829 - 180 pages
...find the mean time of several payments, we have this RULE. Multiply each sum by its TIME of payment, and divide the sum of the PRODUCTS by the sum of the PAYMENTS. The rule ia founded on the supposition that what is gained by keeping a debt a certain time...

A Short System of Practical Arithmetic: Compiled from the Best Authorities ...

William Kinne - 1829
...rates and quantities of the several simples given. RULE. — Multiply each quantity by its rate ; then divide the sum of the products by the sum of the quantities, or the whole composition, and the quotient will be the rate of the compound required. EXAMPLES. 1....

Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - Arithmetic - 1830 - 264 pages
...To 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...

Arithmetic: In which the Principles of Operating by Numbers are Analytically ...

Daniel Adams - Arithmetic - 1830 - 264 pages
...To 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...