It will take approximately 79 years for the account to go from 5000 to 8000. A P 1 rnnt The compound interest formula solves for the future value of your investment A. Divide each side by log 1005.
How to use the compound interest formula.
T Number of years investment will be active. It will take approximately 79 years for the account to go from 5000 to 8000. When Compound Interest is calculated for a time duration of half-year we divide the rate by 2 and multiply the time by 2 in the general formula. Number of times the money is compounded per year and the number of years the money is left in the bank.