So firstly, we have to determine what 6% of $12.50 is. You can do this by multiplying 12.50 and 6% (or 0.06 in decimal form) to get 0.75, or 75 cents. 75 cents is your 6% sales tax.
Next, add up 12.50 and 0.75 to get $13.25. $13.25 is the total cost of the item.
