Given:
The unpaid balance on her credit card is $57200.
The interest rate per month is 1.30%.
To find:
The interest amount.
Explanation:
The interest amount is calculated as follows,
[tex]\begin{gathered} Interest=Unpaid\text{ balance}\times Interest\text{ rate} \\ =57200\times\frac{1.30}{100} \\ =\text{ \$}743.6 \end{gathered}[/tex]Therefore, the interest amount that needs to be charged for 1 month is $743.6.
Final answer:
The interest amount that needs to be charged for 1 month is $743.6.
