Sales tax is added to the price of items sold on eBay. If someone in Arizona buys an item online for $22.50 and the state sales tax rate is 6.6%, what is the final selling price

Price of the online item bought by someone in Arizona = $22.50

Percentage of state sales tax that needs to be paid = 6.6%

Then

Amount of sales tax that needs to be paid = (6.6/100) * 22.50

= 148.5/100 dollars

= 1.48 dollars

So

The final price that needs

to be paid for the online item = (22.50 + 1.48) dollars

= 23.98 dollars