Answer:
$66.07.
Step-by-step explanation:
It has been given that you have a balance of $1678.00 on a credit card with a 15.75% APR.
We will use simple interest formula to solve our problem.

A= Amount after T years.
P= Principal amount.
r= Annual interest rate (in decimal form)
T= Time in years.
Let us convert our given interest rate in decimal form.
Let us convert 3 months in years.

Now let us substitute our given values in simple interest formula.



To find the amount of interest we will subtract our principal amount from 1744.07125.

Therefore, the amount of interest after 3 months will be $66.07.