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Anjali invests a sum of money in a retirement account with a fixed annual interest rate of 6.79% compounded continuously. After 20 years, the balance reaches $14,037.16. What was the amount of the initial investment?

Answer :

Answer:

The initial investment was of $3,610.

Step-by-step explanation:

The continuous interest formula is:

[tex]P(t) = P(0)e^{rt}[/tex]

In which P(t) is the amount of money after t years, P(0) is the initial amount invested and r is the fixed interest rate.

6.79% compounded continuously.

This means that [tex]r = 0.0679[/tex]

After 20 years, the balance reaches $14,037.16.

This means that [tex]t = 20, P(t) = 14,037.16[/tex]

What was the amount of the initial investment?

This is P(0).

[tex]P(t) = P(0)e^{rt}[/tex]

[tex]14037.16 = P(0)e^{0.0679*20}[/tex]

[tex]P(0) = \frac{14037.16}{e^{0.0679*20}}[/tex]

[tex]P(0) = 3610[/tex]

The initial investment was of $3,610.

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