 | Zadock Thompson - Arithmetic - 1832 - 186 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 - 204 pages
...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 - 272 pages
...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 - 268 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 - 300 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 - 108 pages
...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 - 266 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 - 292 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 - 380 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 - 300 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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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. 
