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What is Calculate Unknown Annuity Interest Rate about?
This document describes how to calculate an unknown interest rate for an ordinary annuity using a quadratic equation. It explains that if given the annuity amount (A) or present value of annuity payments (S), you can substitute those values along with the number of periods (n) and payment amount (R) into a quadratic equation relating the interest rate (i) to those other variables. This quadratic equation can then be solved using the quadratic formula to find the unknown interest rate.
- Author
- Opalyn Desiree Lim
- Language
- EN