Rudy has arranged to buy a car for [tex]$\$[/tex]10,240[tex]$. He has a $[/tex]\[tex]$3000$[/tex] trade-in allowance and will make a [tex]$\$[/tex]2000[tex]$ down payment. He will finance the rest with a 3-year auto loan at $[/tex]3.4\%[tex]$ APR.

What is the total amount of interest he will pay? Round your answer to the nearest dollar.

\ \textless \ strong\ \textgreater \ Monthly Car Loan Payment Per $[/tex]\[tex]$1000$[/tex] Borrowed

\begin{tabular}{|c|c|c|c|c|}
\cline {2-5}
\multicolumn{1}{c|}{} & \multicolumn{4}{c|}{Term (months)} \\
\hline
Rate & 24 & 36 & 48 & 60 \\
\hline
[tex]$2.9\%$[/tex] & 42.937 & 29.037 & 22.090 & 17.924 \\
\hline
[tex]$3.0\%$[/tex] & 42.981 & 29.081 & 22.134 & 17.969 \\
\hline
[tex]$3.1\%$[/tex] & 43.025 & 29.125 & 22.179 & 18.013 \\
\hline
[tex]$3.2\%$[/tex] & 43.070 & 29.169 & 22.223 & 18.058 \\
\hline
[tex]$3.3\%$[/tex] & 43.114 & 29.214 & 22.267 & 18.102 \\
\hline
[tex]$3.4\%$[/tex] & 43.158 & 29.258 & 22.312 & 18.147 \\
\hline
[tex]$3.5\%$[/tex] & 43.203 & 29.302 & 22.356 & 18.192 \\
\hline
\end{tabular}



Answer :

Let's solve Rudy's problem step-by-step.

1. Determine the amount to be financed:
- Car price: [tex]\( \$10,240 \)[/tex]
- Trade-in allowance: [tex]\( \$3,000 \)[/tex]
- Down payment: [tex]\( \$2,000 \)[/tex]

The amount to be financed is:
[tex]\[ 10240 - 3000 - 2000 = 5240 \, \text{dollars} \][/tex]

2. Find the monthly car loan payment:
According to the table provided, the monthly car loan payment per [tex]$1000 borrowed at 3.4% APR for a 36-month term is 29.258 dollars. Since Rudy is borrowing \(\$[/tex]5240\), we calculate his monthly payment as follows:
[tex]\[ \left( \frac{5240}{1000} \right) \times 29.258 = 5.24 \times 29.258 = 153.31192 \, \text{dollars per month} \][/tex]

3. Calculate the total payment over the 36 months:
The total payment over the life of the loan is the monthly payment multiplied by the number of months:
[tex]\[ 153.31192 \times 36 = 5519.22912 \, \text{dollars} \][/tex]

4. Find the total interest paid:
The total interest paid is the difference between the total payment and the amount financed:
[tex]\[ 5519.22912 - 5240 = 279.22912 \, \text{dollars} \][/tex]

5. Round the total interest to the nearest dollar:
[tex]\[ \text{Rounded total interest} = 279 \, \text{dollars} \][/tex]

Therefore, the total amount of interest Rudy will pay over the 3-year period, rounded to the nearest dollar, is [tex]\(\boxed{279}\)[/tex] dollars.