| Charles Guilford Burnham - Arithmetic - 1837 - 256 pages
...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,... | |
| 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 is to be... | |
| 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... | |
| Jason M. Mahan - Arithmetic - 1839 - 304 pages
...will be the true equated time. RULE 2. Multiply each several payment by the time it has to run : then **divide the sum of the products by the sum of the payments ; the quotient will be the** equated time, nearly. Examples. IA owes B. S1800, whereof S200 is to. be paid at 6 months, 8400 at... | |
| 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... | |
| Nathan Daboll - 1839
...several debts, due at different times. RULE. Multiply each payment by the time at which it is due, then **divide the sum of the products by the sum of the payments,** and the quotient will be the answer. • . . EXAMPLES. 1. A owes B $380, to be paid $100 in 6 months,... | |
| Daniel Adams - Arithmetic - 1840 - 264 pages
...find the mean lime 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... | |
| Calvin Tracy - Arithmetic - 1840 - 316 pages
...following rule : RULE. — Multiply each payment by the time which must elapse before it becomes due, **and divide the sum of the products by the sum of the payments.** 2. A. owes me $50, payable in 4 months ; $100, payable in 10 months ; and $150, payable in 16 months.... | |
| Daniel Adams - Arithmetic - 1848 - 316 pages
...6-j-days, Ans. Hence, To find the mean time of several payments, Multiply each sum by its time of payment, **and divide the sum of the products by the sum of the payments.** EXAMPLES FOR PRACTICE. 4. A western merchant owes in New York city $200, due in 5 months; $325'50,... | |
| George Leonard - 1841 - 356 pages
...either debtor or creditor, merchants usually Multiply each debt by the time to elapse before it is due, **and divide the sum of the products by the sum of the** debts. Though this method is inaccurate it is easy, and experiment shows it may be employed without... | |
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