Question

Clothes costs: 2 skirts $40 each
2 skirts $33 each
Sales tax: 6 1/2%
Shipping charge: $7.85
Total cost: ?

Answer 1

(2*40)+(2*33)*1.065+7.85
So 80+66 = 146
you multiply that with 1.065 to add the sales tax
146*1.065=155.49
Now add the shipping charge
155.49+7.85= $163.34

Answer 2

When the shipping charge is included in the tax, you add the 7.85 before you multiply with 1.065
So then it would be 146+7.85=153.85*1.065= $163.85

Answer 3

(2 * 40) + (2 * 33) = 80 + 66 = 146
6 1/2% = 6.5% = .065
146(.065) = 9.49
146 + 9.49 = 155.49
155.49 + 7.85 = 163.34 <-- total cost
I do not think the shipping charge is included in the sales tax.