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Continuously Compounded Interest

Formula for Continuously Compounded Interest

To calculate continuously compounded interest use the formula below. In the formula, A represents the final amount in the account that starts with an initial (principal) P using interest rate r for t years. This formula makes use of the mathemetical constant e .

formula for how to calculate continuously compounded interest

Continuously Compounded Interest is a great thing when you are earning it! Continuously compounded interest means that your principal is constantly earning interest and the interest keeps earning on the interest earned!

Practice Problems

Problem 1

If you invest $1,000 at an annual interest rate of 5% compounded continuously, calculate the final amount you will have in the account after five years.

Problem 1 answer
Problem 2

If you invest $500 at an annual interest rate of 10% compounded continuously, calculate the final amount you will have in the account after five years.

Problem 1 answer
Problem 3

If you invest $2,000 at an annual interest rate of 13% compounded continuously, calculate the final amount you will have in the account after 20 years.

Problem 1 answer
Problem 4

If you invest $20,000 at an annual interest rate of 1% compounded continuously, calculate the final amount you will have in the account after 20 years.

Problem 1 answer
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