KFC review: tax on tax

I visited the local kfc tonight and my total before tax was 23.00 dollars with city tax of 3% and state of 6% the total should have been 25.07 but I was charged 25.11. After some figuring they added the 3 % to the 23.00 which is 23.69 and then charged 6 % of that adding tax on tax. Would you look into this and have someone set there registers right

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