Answer: $3.64
Explanation:
If we're using the formula, tax = % of whole, we will need to fill some values.
The whole is $6, as it's the total money you need to pay before tax
% can be written as 6/100, as we are being charged 6% in tax, and percent is written as 1/100
"of" is just a way to say * in english
So our equation is tax = 6/100 * 6
Which means tax = 36/100
Then, you add the tax to the original value, to get $6 + $0.36 = $6.36
Finally, if you hand the cashier $10, and you spent $6.36, your change is $10 - $6.36, which is $3.64.