Final answer:
The future value of a $12809.56 investment at 4.56% simple interest after 3.8 years is $15034.93. The total interest charged on a $65108.52 loan for 11 months at a 5.35% simple interest rate is $3082.90.
Step-by-step explanation:
To calculate the future value of an investment with simple interest, we use the formula: Future Value = Principal + (Principal × Interest Rate × Time).
For the investment of $12809.56 at 4.56% simple interest for 3.8 years, the calculation is:
- Principal (P) = $12809.56
- Interest Rate (r) = 4.56% or 0.0456 in decimal
- Time (t) = 3.8 years
Interest = P × r × t
Interest = $12809.56 × 0.0456 × 3.8 = $2225.37
So, the future value of the investment after 3.8 years is:
Future Value = Principal + Interest
Future Value = $12809.56 + $2225.37 = $15034.93
Now, for the second question about the interest charged on $65108.52 borrowed for 11 months at a simple interest rate of 5.35%, we convert the time to years (11 months is approximately 0.917 years).
Interest = P × r × t
Interest = $65108.52 × 0.0535 × 0.917 = $3082.90
The amount of interest charged will be $3082.90.