SOLUTION: How many years will it take to for 54,321 invested at compound interest of 13% per annum, to amount to 98,765?

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Question 967199: How many years will it take to for 54,321 invested at compound interest of 13% per annum, to amount to 98,765?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How many years will it take to for 54,321 invested at compound interest of 13% per annum, to amount to 98,765?
:
let t = no. yrs for this to happen
54231*(1.13^t) = 98765
1.13^t = 98765%2F54231
1.13^t = 1.821191
log(1.13^t) = log(1.821191)
log equiv of exponents
t*log(1.13) = log(1.821191)
t = log%281.821191%29%2Flog%281.13%29
using your calc
t = 4.9 yrs