This gives total after n years: Principal x ((1 + interest rate) to the power n)
eg 2500 @ 5% over 7 years compounded annually = 2500 x (1.05)7 = 2500 x 1.407 =
3517.75
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That would depend on the original principal (the amount you borrowed) and how they compute interest.
Compute means to figure out the question and get an answer.
It helps calculations if you think about compound interest as your money increasing every period (for instance, every year) by a certain factor. For example, if you get 5% interest per annum, your capital will increase by a factor of 1.05 every year. If you repeat this, say, 10 years, then your capital will obviously increase by a factor of 1.0510.The detailed formula for the capital you have after a number of periods is thus:(initial capital) x (1 + rate/100)periodsIf you want to know only how much interest you earned, rather than the total money you'll have, just subtract the initial capital.
Compute = calculate; perimeter = measurement of the outside edge.
It seems you already have the result. What is it you want to compute, and based on what data?