Percentage of discount that Camille can use by the discount coupon = 20%
Original price of the sweater = $47.99
Amount of sales tax that needs to be paid = 20%
Now firstly we have to get the discounted price and on that the sales tax has to be added to get the final amount paid by Camille.
Amount of discount received by Camille = (20/100) * 47.99
= 47.99/5
= 9.59
Then the amount of discount received by Camille is $9.59
Then the price of the sweater after discount = (47.99 - 9.59) dollars
= 38.4 dollars
Now the sales tax has to be added on the discounted price of $38.4
Amount of sales tax paid = (6/100) * 38.4
= 2.30 dollars
Then
The total amount paid by Camille = (38.4 + 2.30) dollars
= 40.70 dollars
So the total amount paid by Camille for the sweater is $40.70
