| 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... | |
| Calvin Tracy - Arithmetic - 1840 - 311 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... | |
| George Leonard - 1841
...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... | |
| Daniel Adams - Arithmetic - 1848 - 306 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;... | |
| George Leonard - 1841
...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... | |
| John Husband (math. master, Berwick.) - 1841
...for the whole ? Ans. 7 months. EQUATION OF RATES. RULE.— Multiply each quantity by its rate, then **divide the sum of the products by the sum of the quantities,** and the quotient will be the rate of the compound. EXERCISES. 1. What is the average rate of 51 qr.... | |
| Charles Guilford Burnham - Arithmetic - 1841 - 312 pages
...75-rl5=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... | |
| George Leonard - Arithmetic - 1841 - 340 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... | |
| W. H. CRANK - Arithmetic - 1843 - 316 pages
...mean rate of the mixture. RULE. — Multiply each quantity by its value for a unit of the quantity, **and divide the sum of the products by the sum of the quantities.** (1) 10 galls, of brandy at 16s. 4d., were mixed with 36 at 8*., 45 at 6*., and 18 at 10*. Required... | |
| Charles Davies - Arithmetic - 1843 - 12 pages
...payments.) Hence, we have the following RULE. Multiply each payment by the time before it becomes due, **and divide the sum of the products by the sum of the** payments : the quotient will be the mean time. 2. B owes A $600 : $200 is to be paid in two months,... | |
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