1) Gathering the data
8% sales tax
2 DVDs' price: $21.60 (after taxation)
2) To find out how much for the DVDs without the sales tax, let's write this equation.
P for the price without tax, 1.08 the sales tax factor, $21.60 the full price
p (1.08) =21.60 Let's divide both sides by 1.08
p= 21.60 /1.08
p= 20
3) So the price without tax, is $20
