 | Joseph Ray - Algebra - 1852 - 408 pages
...=3, and t= log. 3 -z- log. R ; if A=mP ; then R' =m, and 1= log. m-=- log. R. Ex. Let it be required to find the time in which any sum will double itself at 10 per cent, compound interest. Here r=.10, R=l+r=l+. 10=1.10; hence, t= **_=*0™aO=f,.yi2jn. *».... | |
 | James Stewart Eaton - 1862 - 320 pages
...will gain $5; .-., to gain $100, t]jj time in years must be the quotient of $100 -f- $5 = 20 ; ie, To find the time in which any sum will double itself, at any rate per cent., divide 100 by the rate, and the quotient will be the time in years. 8. In how many years will $50 amount to $100, it... | |
 | James Stewart Eaton - Arithmetic - 1864 - 322 pages
...$5 ; .-., to gain $100, the time in years must be the quotient of SI 00 -~- $5 = 20 ; ie, To jftnd the time in which any sum will double itself, at any rate per cent., divide 100 by the rate, and the quotient will be the ' time in years. 8. In how many years will $50 amount to $100, it... | |
 | James Stewart Eaton - Arithmetic - 1866 - 328 pages
...will gain S5 ; .•., to gain $100, the time in years must be the quotient of $100 -I- $5 = 20 ; ie, To find the time in which any sum will double itself, at any rate per cent., divide 100 by the rate, and the quotient will be the time in years. 8. In how many years will $50 amount to $100, it... | |
 | Joseph Ray - Algebra - 1852 - 422 pages
...and t= log. 3 -i- teg. R ; if A=mP ; then R' =m, and t= log. TTI-J- log. R. Ex. Let it be required to find the time in which any sum will double itself at 10 per cent, compound interest. • Here r=.10, R=l+r=l+. 10=1.10; , . log. 2 .301030 .- ,„„ ,... | |
 | James Stewart Eaton - 1870 - 176 pages
...then the question is, in what time will $100 gain $100 ? Hence, $100 X .06 = $6 ; $100 ~ $6 = 16f, ie 16yr. 8m., Ans. Hence, To find the time in which...double itself, at any rate per cent, divide 100 by the rate, and the quotient will be the time in years. • 13. Assume $100 ; in what time will $100 gain... | |
 | Joseph Ray - Algebra - 1866 - 420 pages
...=3, and t= log. 3 -H log. R; " if A=«lP ; then, ~Bf =m, and t= log. mH log. R. 1. Let it be required to find the time in which any sum will double itself at 10 per cent, compound interest Here, r=.10, R=l+r=l+.10=1.10; hence, . log. 2 .301030 2. What is the... | |
 | C. Frusher Howard - California - 1877 - 104 pages
...3.158815 18 2.406619 2.854339 3.379932 19 2.526950 3.025600 3.616526 20 2.653298 3.207135 3.869684 To find the time in which any sum will double itself at compound interest, at any rate not exceeding 10^ per annum. RULE. — Divide 70 by .the rate of interest,... | |
 | C. Frusher Howard - Business mathematics - 1878 - 104 pages
...3.158815 18 2.406619 2.854339 3.379932 19 2.526950 3.025600 3.616526 20 2.653298 3.207135 3.869684 To find the time in which any sum will double itself at compound interest, at any rate not exceeding 10% per annum. RULE. — Divide 70 by the rate of interest,... | |
 | William Frothingham Bradbury - 1882 - 416 pages
...; hence, to gain $ 100, the time in years must be the quotient of $ 100 —• $ 5 = 20 ; that is, To find the time in which any sum will double itself, at any rate per cent, divide 100 by the rate, and the quotient will be the number of years. 104. In how many years will $ 50 amount to $ 100... | |
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To find the time in which any sum will double itself, at any rate per cent., divide 100 by the rate, and the quotient will be the time in years. 8. In how many years will $50 amount to $100, it being on interest at 8 per cent. ? Ans. 12yr. 6m. 9. How... 