Given:
Loan amount = $39,000
Interest rate, r = 4.92% compounded quarterly.
Let's solve for the following:
• (a) Calculate the accumulated amount of this loan at the end of 9 years and 3 months.
To find the accumulated amount apply the formula:
![A=P(1+(r)/(n))^(nt)](https://img.qammunity.org/2023/formulas/mathematics/high-school/39foo2gerf9tf1ffk32zwshrn339mz02kv.png)
Where:
A is the final amount
P is the loan amount = $39000
r is the interest rate = 4.92% = 0.0492
Since it is compounded quarterly, n = 4
t is the time in years = 9 years 3 months
To write the time in years, we have:
![9(3)/(12)=9(1)/(4)=\frac{37}{4\text{ }}years](https://img.qammunity.org/2023/formulas/mathematics/college/kpzuugt6wngonzaxw8c791dy0cw964mup2.png)
Therefore, to find the accumulated amount, we have:
![\begin{gathered} A=39000(1+(0.0492)/(4))^{4\ast(37)/(4)} \\ \\ A=39000(1+0.0123)^(37) \\ \\ A=39000(1.0123)^(37) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/ouyncfkvjz42jgsvyr4qd7itctl20p0oe8.png)
Solving further:
![\begin{gathered} A=39000(1.571960987) \\ \\ A=61306.48 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/mzkalgfgrhr8edy2f34nva8xcj5dnhquxc.png)
Therefore, the accumulated amount of this loan at the end of 9 years and 3 months is: $61,306.48
• (b) Calculate the interest charged on this loan.
To calculate the interest, subtract the principal amount from the accumulated loan.
We have:
Interest charged = Accumulated loan - Principal amount
Interest charged = $61,306.48 - $39,000
Interest charged = $22,306.48
Therefore, the interest chrged on this loan is $22,306.48
ANSWER:
• a) $61,306.48
,
• b) $22,306.48