Question

The sales tax for an item was $28.80 and it cost $320 before tax. Answer in a percentage (thanks!)

Answer 1

I use an equation, then find the variable
p=price of the item
t=tax
c=total cost

`( (t)/(100) * p) + p = c`
Now, you can figure out the equation by putting in the number, or you can do a shortcut. Find the percentage of 28.8 of 320, and you'll get your answer.

`(28.8)/(320) = .09 * 100 = 9`
It was 9%.

Tell me if this helps!!