The compound interest formula can be used to calculate the value of such an investment after a given amount of time or to calculate things like the doubling time of an investment. 42 COMPOUND INTEREST Compound amount future value is S after n interest periods Compound Interest Formula The formula to calculate the compound amount is given by S P 1 i where. So after adding the interest amount to your base amount your new total amount is A 1 A 0 p 100 A 0 1 p 100 A 0.
And by rearranging that formula see Compound Interest Formula Derivation we can find any value when we know the other three.
Concept of Simple Interest. A is the amount of money accumulated after n years including interest. It comprises mainly profit loss and interest. 4635 50 4000 1 r 3 4635 50 4000 1 r 3 1158 1 r 3 1158 1 3 1 r 105 1 r r 100 005 r 5.