Given:
The cost of the item is
[tex]\text{ \$}310.[/tex]The sales tax is
[tex]\text{ \$}6.20[/tex]Required:
We have to find the Sale tax rate and write the answer in percentage.
Explanation:
The formula for the sales tax rate is
[tex](\frac{\text{ sales tax}}{\text{ cost}}\times100)\%.[/tex]Therefore, The required sales tax rate is
[tex](\frac{6.20}{310}\times100)\%=(\frac{620}{310})\%=2\%.[/tex]Final answer:
Hence the final answer is
[tex]2\%.[/tex]