| Zadock Thompson - 1832 - 186 σελίδες
...preceding example, it is called ALLIGATION MEDIAL. RULE. 808. Multiply each quantity by its price, and divide the sum of the products by the sum of the quantities, the quotient will be the rate of the compound required. QUESTIONS FOR PRACTICE. 2. If I... | |
| Daniel Adams - 1833 - 268 σελίδες
...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 what is gained by keeping a debt a certain... | |
| Samuel YOUNG (of Manchester.) - 1833 - 272 σελίδες
...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... | |
| Francis Walkingame - 1833 - 204 σελίδες
...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... | |
| Frederick Emerson - 1834 - 300 σελίδες
...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 Franklin Foster - 1837 - 262 σελίδες
...business use the following general RULE. Multiply the amount of each debt by the time it has to run till it becomes due, and divide the sum of the products by the amount of the debt ; the quotient is the average or equated time of payment. Thus the equated time... | |
| Charles Guilford Burnham - 1837 - 266 σελίδες
...Ibs.= 12J cts., the worth of 1 Ib. of the mixture. Hence the RULE. Multiply each quantity by its price, and divide the sum of the products by the sum of the quantities ; the quotient will be the rate of the compound required. EXAMPLES. 2. A grocer mixes sugar,... | |
| Benjamin Franklin Foster - 1837 - 224 σελίδες
...business use the following general RULE. Multiply the amount of each debt by the time it has to run till it becomes due, and divide the sum of the products by the amount of the debt; the quotient is the average or equated time of payment. Thus the equated time of... | |
| Charles Davies - 1838 - 292 σελίδες
...is the mean time for the payment of 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 is to be... | |
| Augustus De Morgan - 1838 - 380 σελίδες
...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... | |
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