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\( 1 \leftarrow \) A bank pays \( 5 \% \) annual interest compounded daily. What is the value of \( \$ 2500 \) after 8 yr ? The value of \( \$ 2500 \) after 8 yr is \( \$ \square \). (Round to the nearest cent as needed.)

Ask by Newton Stuart. in the United States
Feb 18,2025

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Tutor-Verified Answer

Answer

The value of \$2500 after 8 years is \$3,729.56.

Solution

We can use the compound interest formula:   A = P (1 + r/n)^(n*t) Here,   P = $2500 (initial principal),   r = 0.05 (annual interest rate as a decimal),   n = 365 (times compounded per year since interest is compounded daily), and   t = 8 (years). Plug the values in:   A = 2500 (1 + 0.05/365)^(365×8) First, simplify the inner term:   0.05/365 ≈ 0.00013699 Then:   A = 2500 (1.00013699)^(2920) Using a calculator, (1.00013699)^(2920) ≈ 1.49182. So:   A ≈ 2500 × 1.49182 ≈ 3729.56 Thus, the value of $2500 after 8 years is $3729.56.

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The Deep Dive

To find the future value of \( \$ 2500 \) after 8 years with a \( 5\% \) annual interest rate compounded daily, you can use the formula for compound interest: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] Where: - \( A \) is the amount of money accumulated after n years, including interest. - \( P \) is the principal amount (the initial amount of money). - \( r \) is the annual interest rate (decimal). - \( n \) is the number of times that interest is compounded per unit \( t \). - \( t \) is the time the money is invested for in years. In this case: \( P = 2500 \) \( r = 0.05 \) \( n = 365 \) (daily compounding) \( t = 8 \) Now, plug the values into the formula: \[ A = 2500 \left(1 + \frac{0.05}{365}\right)^{365 \times 8} \] Calculating the inside first: \[ A = 2500 \left(1 + \frac{0.05}{365}\right)^{2920} \] \[ A \approx 2500 \left(1 + 0.0001369863\right)^{2920} \] \[ A \approx 2500 \left(1.0001369863\right)^{2920} \] \[ A \approx 2500 \times 1.432364654 \] \[ A \approx 3580.91 \] Thus, the value of \( \$ 2500 \) after 8 years is approximately \( \$ 3580.91 \).

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