Actual price of the snowmobiles = $2800
Percentage of sale on the actual cost of snowmobiles = 20%
Then
Amount of sale on the snowmobile = (20/100) * 2800 dollars
= 20 * 28 dollars
= 560 dollars
So the price of the snowmobiles after discount = (2800 - 560) dollars
= 2240 dollars
Percentage of sales tax taken = 8.25%
Amount of sales tax taken = (8.25/100) * 2240 dollars
= 18480/100 dollars
= 184.80 dollars
Then
the sale price of the snowmobiles including tax = (2240 + 184.80) dollars
= 2424.80 dollars
So the price of the snowmobiles including tax after discount will be $2424.80. I hope the procedure is clear enough for you to understand.