SOLUTION: What is the equation needed to back tax % out of a number. i.e. If you have $20,710 in sales including tax at 8.75 % what are the pre tax sales

Question 315944: What is the equation needed to back tax % out of a number.
i.e. If you have $20,710 in sales including tax at 8.75 % what are the pre tax sales
Found 2 solutions by rfer, checkley77:
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
20710/1.0875=19043.68
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
20,710(1-.0875)
20,710*.9125=$18,897.88 ANS.
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