SOLUTION: Dress cost �80 after 15% tax . How much dress before tax.Please show working out

Question 443148: Dress cost �80 after 15% tax . How much dress before tax.Please show working out
Found 2 solutions by stanbon, nerdybill:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Dress cost �80 after 15% tax . How much dress before tax.Please show working out
----------------
Let original cost be "x".
Equation:
x - 0.15x = L80
----
0.85x = L80
---
x = L80/0.85
--
x = L94.12
===============
Cheers,
Stan H.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Dress cost �80 after 15% tax . How much dress before tax.Please show working out
.
Let x = cost of dress before tax
then
x + .15x = 80
x(1 + .15) = 80
x(1.15) = 80
x = 80/1.15
x = �69.57
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