SOLUTION: A woman paid $21.56 (including sales tax) for a book that was marked 20% off. The sales tax was 8%. What was the cover price of the book?

Question 519460: A woman paid $21.56 (including sales tax) for a book that was marked 20% off. The sales tax was 8%. What was the cover price of the book?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = cover price
Let = tax included
(1)
(2)
(2)
(2)
By substitution:
(1)
(1)
(1)
cover price is $24.95
----------------
check:
with 20% off:

plus 8% tax:

OK

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