Question

The auto parts store sell a car battery that has a regular price of $89. Store A discounts the battery by 20% and then adds 6.5% sales tax. Store B adds the tax first and then takes the discount. Are the selling prices the same ? Justify your answer.

Answer 1

okay so
first
(89-0.2*89)*(1.065) <--- 20% off then 6.5% sales tax

Answer 2

can you write the equation for the 2nd scenario yourself

Answer 3

(89*1.065*89) - 0.2
Would it be like that ? @dan815