Sales tax question?

Question

Amount of purchase is 180.81 and the tax is 15.81 how do I figure out the tax rate percentage

Answer 1

It's about 8.75 percent...I just played with the numbers....

Answer 2

15.81/180.81= .087439

Tax is 8.74%

Answer 3

I assumed that the subtotal was 165 with 15.81 tax, so i took 15.81/165 and got 0.0958181 approx=9.58%

Answer 4

I did 15.81 divided by 180.81.  The answer to that is .0874 then move the decimal point 2 places to the right and your sales tax is 8 3/4 %.  That's very high for sales tax by the way.  Is $180.81 the subtotal before tax or the total after tax?