Lanny's credit card has an APR of [tex]$33 \%$[/tex], calculated on the previous monthly balance. His credit card record for the last 7 months is shown in the table below.

\begin{tabular}{ccccccc}
\hline
\begin{tabular}{c}
End of \\
month
\end{tabular} & \begin{tabular}{c}
Previous \\
balance
\end{tabular} & \begin{tabular}{c}
New \\
charges
\end{tabular} & \begin{tabular}{c}
Payment \\
received
\end{tabular} & \begin{tabular}{c}
Finance \\
charges
\end{tabular} & \begin{tabular}{c}
Principal \\
paid
\end{tabular} & \begin{tabular}{c}
New \\
balance
\end{tabular} \\
\hline
1 & [tex]$\$[/tex] 0.00[tex]$ & $[/tex]\[tex]$ 47.00$[/tex] & [tex]$\$[/tex] 0.00[tex]$ & $[/tex]\[tex]$ 0.00$[/tex] & [tex]$\$[/tex] 0.00[tex]$ & $[/tex]\[tex]$ 47.00$[/tex] \\
2 & [tex]$\$[/tex] 47.00[tex]$ & $[/tex]\[tex]$ 182.00$[/tex] & [tex]$\$[/tex] 44.22[tex]$ & $[/tex]\[tex]$ 1.29$[/tex] & [tex]$\$[/tex] 42.93[tex]$ & $[/tex]\[tex]$ 186.07$[/tex] \\
3 & [tex]$\$[/tex] 186.07[tex]$ & $[/tex]\[tex]$ 34.00$[/tex] & [tex]$\$[/tex] 225.19[tex]$ & $[/tex]\[tex]$ 5.12$[/tex] & [tex]$\$[/tex] 220.07[tex]$ & $[/tex]\[tex]$ 0.00$[/tex] \\
4 & [tex]$\$[/tex] 0.00[tex]$ & $[/tex]\[tex]$ 98.00$[/tex] & [tex]$\$[/tex] 69.43[tex]$ & $[/tex]\[tex]$ 0.00$[/tex] & [tex]$\$[/tex] 69.43[tex]$ & $[/tex]\[tex]$ 28.57$[/tex] \\
5 & [tex]$\$[/tex] 28.57[tex]$ & $[/tex]\[tex]$ 101.00$[/tex] & [tex]$\$[/tex] 2.98[tex]$ & $[/tex]\[tex]$ 0.79$[/tex] & [tex]$\$[/tex] 22.19[tex]$ & $[/tex]\[tex]$ 107.38$[/tex] \\
6 & [tex]$\$[/tex] 107.38[tex]$ & $[/tex]\[tex]$ 21.00$[/tex] & [tex]$\$[/tex] 57.00[tex]$ & $[/tex]\[tex]$ 0.95$[/tex] & [tex]$\$[/tex] 54.05[tex]$ & $[/tex]\[tex]$ 74.33$[/tex] \\
7 & [tex]$\$[/tex] 74.33[tex]$ & $[/tex]\[tex]$ 99.00$[/tex] & [tex]$\$[/tex] 91.98[tex]$ & $[/tex]\[tex]$ 2.04$[/tex] & [tex]$\$[/tex] 89.94[tex]$ & $[/tex]?[tex]$ \\
\hline
\end{tabular}

What is the new balance at the end of month 7?

A. $[/tex]\[tex]$ 74.43$[/tex]
B. [tex]$\$[/tex] 91.98[tex]$
C. $[/tex]\[tex]$ 83.39$[/tex]
D. [tex]$\$[/tex] 99.00$



Answer :

To determine the new balance at the end of month 7, let's break down the given information step-by-step, taking into account all the relevant factors:

1. Previous Balance: This is the balance carried over from the end of the previous month. According to the table, at the end of month 6, Lanny's previous balance is [tex]$74.33. 2. New Charges: These are the additional charges made during the month. For month 7, the new charges are $[/tex]99.00.

3. Payment Received: This is the amount paid towards the credit card debt during the month. For month 7, the payment received is [tex]$91.98. 4. Finance Charges: These are the charges assessed for carrying a balance on the credit card. The finance charges for month 7 are $[/tex]2.04.

To calculate the new balance, we need to consider the following formula:
[tex]\[ \text{New Balance} = \text{Previous Balance} + \text{New Charges} + \text{Finance Charges} - \text{Payment Received} \][/tex]

Substitute the values from month 7:
[tex]\[ \text{New Balance} = 74.33 + 99.00 + 2.04 - 91.98 \][/tex]

Now let's perform the calculations step by step:

1. Add Previous Balance and New Charges:
[tex]\[ 74.33 + 99.00 = 173.33 \][/tex]

2. Add Finance Charges:
[tex]\[ 173.33 + 2.04 = 175.37 \][/tex]

3. Subtract Payment Received:
[tex]\[ 175.37 - 91.98 = 83.39 \][/tex]

Therefore, the new balance at the end of month 7 is:
[tex]\[ \boxed{\$ 83.39} \][/tex]

So, the correct option is:
C. [tex]\(\$ 83.39\)[/tex]