He purchase:
3 electronic games --> $32.99*3=$98.97
I pad --> $200
Total without discount and taxes= $298.97
To calculate the discount we are going to use percents:
$298.97*18/100=$53.81 This is the 18% percent discount
So, the total with discount and without sales tax is:
$298.97-$53.81=$245.16
And since we know the sales tax is 8.5% we are going to use the same formula:
$245.16*8.5/100=$20.84
So, the total of these items would be:
$245.16+$20.84=$266