| Zadock Thompson - Arithmetic - 1832 - 168 pages
...for practical purposes. 189. RULE. — Multiply each of the payments by the time in which it is due, **and divide the sum of the products by the sum of the** payments ; the quotient will be the equated time of payment QUESTIONS FOR PRACTICE. 2. A owes B $380,... | |
| Francis Walkingame - 1833
...MEDIAL. The various quantities and prices being given, to find the mean price of the mixture. RULE. **Multiply each quantity by its price, and divide the...sum of the products by the sum of the quantities.*** (1) A grocer mixed 4 cwl. of sugar, at 56.?. per cwt. with 7 cwt. at 43i. per cwl. and 5 cwt. at 37*.... | |
| Samuel YOUNG (of Manchester.) - 1833
...of the several simples, to find the rate of the mixture. RULG. Multiply each quantity by its rate, **and divide the sum of the Products by the sum of the quantities.** (1) 8 Ibs. of sugar at 7d. per Ib. were mixed with 5 Ibs. at 8d. and 7 Ibs. at Is. Required the price... | |
| Daniel Adams - Arithmetic - 1833 - 264 pages
...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... | |
| Frederick Emerson - Arithmetic - 1834 - 288 pages
...sum of them by the sum of the debts. RULE. Multiply each debt by the time, in which it is payable, **and divide the sum of the products by the sum of the** debts: the quotient will be the equated time. 1. If I owe you 50 dollars payable in 4 months, 75 dollars... | |
| Benjamin Snowden - 1835
...Is when the quantities and prices are given. RULE. — Multiply each quantity by its rate or price, **divide the sum of the products by the sum of the quantities,** and the quotient will be the mean price. Proof by Division. Examples. A farmer mixed 20 bushels of... | |
| Charles Guilford Burnham - Arithmetic - 1837 - 256 pages
...75-r-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... | |
| Charles Davies - Arithmetic - 1838 - 288 pages
...the whole ? OPERATION. We here multiply each sum 200 x 2 = 400 by the time at which it becomes due, **and divide the sum of the products by the sum of the** payments. 200x4= 800 200x6 = 1200 600 )24|00 Ans. 4 months. . 3. A merchant owes $600, of which $100... | |
| Augustus De Morgan - Annuities - 1838 - 306 pages
...of 4 and 1, and the method of finding an average is this : multiply every observation by its weight **and divide the sum of the products by the sum of the** weights. Such a method was adopted before the theory of probabilities was applied to the subject, as... | |
| Frederick Emerson - Arithmetic - 1839 - 288 pages
...sum oi them by the sum of the debts. RULE. Multiply each debt by the time, in which it is payable, **and divide the sum of the products by the sum of the** debts: the quotient will be the equated time. 1. If I owe you 50 dollars payable in 4 months, 75 dollars... | |
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