Join the growing community of curious minds on IDNLearn.com and get the answers you need. Discover prompt and accurate responses from our experts, ensuring you get the information you need quickly.

Use the compound interest formulas [tex]$A = P \left(1 + \frac{r}{n}\right)^{nt}$[/tex] and [tex]$A = Pe^{rt}$[/tex] to solve the problem given. Round answers to the nearest cent.

Find the accumulated value of an investment of [tex][tex]$\$[/tex]10,000$[/tex] for 3 years at an interest rate of [tex]6.5\%[/tex] if the money is:

a. compounded semiannually
b. compounded quarterly
c. compounded monthly
d. compounded continuously


Sagot :

Absolutely, let's go through the solution step-by-step.

Given:
- Principal (P) = \[tex]$10,000 - Annual interest rate (r) = 6.5% = 0.065 - Time (t) = 3 years We need to find the accumulated value using different compounding methods: ### a. Compounded Semiannually For semiannual compounding, the number of compounding periods per year (n) is 2. Using the formula \( A = P\left(1+\frac{r}{n}\right)^{nt} \), we have: - \( P = 10000 \) - \( r = 0.065 \) - \( n = 2 \) - \( t = 3 \) Substituting these values, we get: \[ A_{\text{semiannual}} = 10000 \left(1+\frac{0.065}{2}\right)^{2 \times 3} \] \[ A_{\text{semiannual}} = 10000 \left(1+0.0325\right)^6 \] \[ A_{\text{semiannual}} = 10000 (1.0325)^6 \] Calculating the result: \[ A_{\text{semiannual}} \approx 10000 \times 1.211546 \] Rounding to the nearest cent: \[ A_{\text{semiannual}} = 12115.47 \] ### b. Compounded Quarterly For quarterly compounding, the number of compounding periods per year (n) is 4. Using the formula \( A = P\left(1+\frac{r}{n}\right)^{nt} \), we have: - \( P = 10000 \) - \( r = 0.065 \) - \( n = 4 \) - \( t = 3 \) Substituting these values, we get: \[ A_{\text{quarterly}} = 10000 \left(1+\frac{0.065}{4}\right)^{4 \times 3} \] \[ A_{\text{quarterly}} = 10000 \left(1+0.01625\right)^{12} \] \[ A_{\text{quarterly}} = 10000 (1.01625)^{12} \] Calculating the result: \[ A_{\text{quarterly}} \approx 10000 \times 1.213408 \] Rounding to the nearest cent: \[ A_{\text{quarterly}} = 12134.08 \] ### c. Compounded Monthly For monthly compounding, the number of compounding periods per year (n) is 12. Using the formula \( A = P\left(1+\frac{r}{n}\right)^{nt} \), we have: - \( P = 10000 \) - \( r = 0.065 \) - \( n = 12 \) - \( t = 3 \) Substituting these values, we get: \[ A_{\text{monthly}} = 10000 \left(1+\frac{0.065}{12}\right)^{12 \times 3} \] \[ A_{\text{monthly}} = 10000 \left(1+0.00541667\right)^{36} \] \[ A_{\text{monthly}} = 10000 (1.00541667)^{36} \] Calculating the result: \[ A_{\text{monthly}} \approx 10000 \times 1.214672 \] Rounding to the nearest cent: \[ A_{\text{monthly}} = 12146.72 \] ### Compounded Continuously For continuous compounding, we use the formula \( A = P e^{rt} \). Using this, we have: - \( P = 10000 \) - \( r = 0.065 \) - \( t = 3 \) Substituting these values, we get: \[ A_{\text{continuously}} = 10000 \times e^{0.065 \times 3} \] \[ A_{\text{continuously}} = 10000 \times e^{0.195} \] Calculating the result: \[ A_{\text{continuously}} \approx 10000 \times 1.215311 \] Rounding to the nearest cent: \[ A_{\text{continuously}} = 12153.11 \] ### Summary Thus, the accumulated values for the various compounding methods are: a. Compounded Semiannually: \$[/tex]12,115.47
b. Compounded Quarterly: \[tex]$12,134.08 c. Compounded Monthly: \$[/tex]12,146.72
d. Compounded Continuously: \$12,153.11