Jerry bought a bottle of perfume for a gift for his wife.
The perfume cost $92 before tax.
If the total price including tax was $98.90, find the tax rate
Choose the correct choice from the following choices.
A) 7.5 %  B) 5 %  C) 12 %  D) 8 %  E) 10 %

Rationale: total price including tax is $ 98.90 perfume cost before tax is = 92 ie 92 * 7.5 % + 98.90 answer is 7.5 %
Answer: A