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Sagot :
Sure! Let's solve the problem step by step.
a) Calculate the total amount:
Given:
- Principal amount (P) = [tex]$10,000 - Annual interest rate (r) = 9% or 0.09 (as a decimal) - Time (t) = 3 years - Number of times interest is compounded per year (n) = 1 (since it is compounded annually) The formula for calculating the total amount (A) using compound interest is: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] Plugging in the values: \[ A = 10000 \left(1 + \frac{0.09}{1}\right)^{1 \times 3} \] First, calculate the inside of the parentheses: \[ 1 + \frac{0.09}{1} = 1.09 \] Now raise this to the power of (n \times t): \[ (1.09)^3 = 1.09 \times 1.09 \times 1.09 \] After calculating, we get the total amount (A): \[ A \approx 12950.29 \] So, the total amount after 3 years is approximately $[/tex]12,950.29.
b) Calculate the compound interest:
Compound interest (CI) is the difference between the total amount (A) and the principal amount (P).
[tex]\[ CI = A - P \][/tex]
We already have the values for A and P:
[tex]\[ CI = 12950.29 - 10000 \][/tex]
[tex]\[ CI = 2950.29 \][/tex]
Therefore, the compound interest earned over 3 years is approximately [tex]$2,950.29. Summary: a) The total amount after 3 years is approximately $[/tex]12,950.29.
b) The compound interest earned over 3 years is approximately $2,950.29.
a) Calculate the total amount:
Given:
- Principal amount (P) = [tex]$10,000 - Annual interest rate (r) = 9% or 0.09 (as a decimal) - Time (t) = 3 years - Number of times interest is compounded per year (n) = 1 (since it is compounded annually) The formula for calculating the total amount (A) using compound interest is: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] Plugging in the values: \[ A = 10000 \left(1 + \frac{0.09}{1}\right)^{1 \times 3} \] First, calculate the inside of the parentheses: \[ 1 + \frac{0.09}{1} = 1.09 \] Now raise this to the power of (n \times t): \[ (1.09)^3 = 1.09 \times 1.09 \times 1.09 \] After calculating, we get the total amount (A): \[ A \approx 12950.29 \] So, the total amount after 3 years is approximately $[/tex]12,950.29.
b) Calculate the compound interest:
Compound interest (CI) is the difference between the total amount (A) and the principal amount (P).
[tex]\[ CI = A - P \][/tex]
We already have the values for A and P:
[tex]\[ CI = 12950.29 - 10000 \][/tex]
[tex]\[ CI = 2950.29 \][/tex]
Therefore, the compound interest earned over 3 years is approximately [tex]$2,950.29. Summary: a) The total amount after 3 years is approximately $[/tex]12,950.29.
b) The compound interest earned over 3 years is approximately $2,950.29.
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