What do you need to do when calculating interest?

Answer 1

When calculating interest, you need to determine the principal amount (the initial sum of money), the interest rate (expressed as a percentage), and the time period for which the interest will be calculated. Depending on whether you're calculating simple or compound interest, you would apply the appropriate formula: for simple interest, use ( I = P \times r \times t ), and for compound interest, use ( A = P(1 + r/n)^{nt} ), where ( A ) is the total amount, ( n ) is the number of times interest is compounded per time period, and ( t ) is the number of time periods. Finally, ensure all units are consistent, such as time being in years or months as applicable.