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Compound Interest
formula, variables and compound times
| Question | Answer |
|---|---|
| compound interest | Interest on Interest |
| simple interest | Interest only on principal |
| Simple Interest Formula | I = P x R x T |
| Compound Interest Formula | A = P (1 + r/n) to the power of (n times t) |
| P | Principal, the amount deposited in the bank |
| r | Interest rate written as a decimal |
| t | time in years |
| n | the number of times, in a year, that you get interest |
| compounded quarterly | interest 4 times a year |
| compounded monthly | interest 12 times a year |
| compounded semi-monthly | interest 2 times a year |
| compounded annually | interest 1 time each year |