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what is the interest rate formula. I Compound interest P Principal i Nominal interest rate per period n Number of compounding periods beginaligned I leftPleft1irightnright. When the amount of interest the principal and the time period are known you can use the derived formula from the simple interest formula to determine the rate as follows.
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For these fixed loans use the formula below to calculate the payment. Amount A Principal P Interest I Where. Youll need to convert from percentage to decimal format to complete these steps.
The formula for compound interest is P 1 rnnt where P is the initial principal balance r is the interest rate n is the number of times interest is compounded per time period and t is the number of time periods.
What is your monthly interest rate and how much would you pay or earn on 2000. Mathematically it is represented as Real Interest Rate 1 Nominal Interest Rate 1 Inflation Rate 1. In simple in it also written as Simple Interest rate PRT100. Real rate inflation nominal rate In this equation nominal rate is generally the figure being discussed when interest rate is mentioned.
