Answer:
$1.82 or 6.5%
Step-by-step explanation:
Amount paid by Sam for Purchasing brushes =$ 8
Amount paid by Sam for Purchasing palette =$ 5
Amount paid by Sam for Purchasing oil paints =$ 15
Hence, the total amount to be paid by Sam= $8+$5+$15
Total amount to be paid by Sam=$ 28
Total amount paid by Sam= $29.82
Sales- tax paid by Sam= $29.82- 28
Sales- tax paid by Sam= 1.82
Rate of sales-tax=[tex]\frac{1.82}{28}[/tex]× 100
Rate of sales-tax=6.5%
Hence, the correct answer is 6.5%