请教一道文字很搞的数学题

angelavivi

来自模考光盘

For every pack of cigarettes sold, a state tax of 12 cents and a local tax of 3 cents are added to the price of the pack. if a pack of cigarettes sells for $1.35 including taxes, approximately what percent of the pre-tax price is the sum of the state and local taxes?
12.5 (answer)
12
11
9.3
9.0
I don't understand the last sentence of the question?

britney-gao

(state tax + local tax) = x% * pre-tax price

x = ?

casualwalk

州税和地方税的和是没有加税前的价格的百分之几？