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.

First, you need to find how much money the tax was (98.90-92=6.9) Then, divide the tax by the price without the tax to find the tax rate (6.9/92=.075) then multiply the answer by 100 (.075*100=7.5) The tax rate is 7.5%