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RULE. Divide the given interest by the interest of \$1 for the given time and rate, and the quotient will be the principal.
Burnham's Arithmetic, Revised: A New System of Arithmetic, on an Improved ... - Page 198
by Charles Guilford Burnham - 1857 - 324 pages

A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

Charles Guilford Burnham - Arithmetic - 1837 - 266 pages
...above we derive the following RULE : To find the Present Worth. DIVIDE the given sum by the amount of \$1 for the given time, and the quotient will be the present worth. The present wort h subtracted from the debt, will leave the discount. 2. What is the...

Higher Arithmetic: Designed for the Use of High Schools, Academies, and Colleges

George Roberts Perkins - Arithmetic - 1841 - 274 pages
...per cent., and the interest, to find the principal. By the reverse of the last problem we obtain this RULE. Divide, the given interest by the interest of \$1, for the given time, and given rate per cent. Examples. 1. The interest on a certain principal, for 9 months and 10 days,at...

A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

Charles Guilford Burnham - Arithmetic - 1841 - 324 pages
...the above we derive the following RULE: To find the present worth. Divide the given sum by the amount of \$1 for the given time, and the quotient will be the present worth. The present worth, subtracted from the debt, will leave the discount. 2. What is the...

Engineers' and Mechanics' Pocket-book ...

Charles Haynes Haswell - Engineering - 1844 - 298 pages
...compound interest. DISCOUNT. The Time, Rate per Cent., and Interest being gieen, to find the Principat. RULE.— Divide the given interest, by the interest of \$1, for the given rate and time. EXAMPLE.— What sum of money at 6 per cent, will in 14 months gain \$14 ? \$14H-.07 =...

An Elementary Arithmetic ...: Serving as an Introduction to the Higher ...

George Roberts Perkins - Arithmetic - 1846 - 266 pages
...cent., and the interest, to find the principal. By the reverse of the last problem, we obtain this RULE. Divide the given interest by the interest, of \$1, for the given time, and given rate per cent. EXAMPLES, 1. The interest on a certain principal, for 9 months and 10 days, at...

Practical Arithmetic, Uniting the Inductive with the Synthetic Mode of ...

James Bates Thomson - Arithmetic - 1846 - 402 pages
...interest by this fraction ; (Art. 141 ;) and the quotient will be the principal required. Or, simply divide the given interest by the interest of \$1 for the given time and rate expressed in decimals ; and the quotient will be the principal. 12. What sum put at interest will...

Higher Arithmetic: Or, The Science and Application of Numbers; Combining the ...

James Bates Thomson - Arithmetic - 1847 - 426 pages
...interest. Hence, 423. To find the principal, when the interest, rate per cent., and time are given. Divide the given interest by the interest of \$1 for the given time and rate, expressed in decimals ; and the quotient will be the principal required. Or, make the interest...

Higher Arithmetic; Or, The Science and Application of Numbers: Combining the ...

James Bates Thomson - Arithmetic - 1848 - 434 pages
...interest. Hence, 423. To find the principal, when the interest, rate per cent., and time are given. Ijivide the given interest by the interest of \$1 for the given time and rate, expressed in decimals ; and the quotient will be the principal required. Or, make the interest...