Answer:
C) 8.5%
Step-by-step explanation:
First, subtract the cost after tax to the cost before tax.
84.63 - 78.00 =
6.63
Then, divide the original cost from this
6.63 / 78.00 =
0.085
When reading percentages on a calculator, we know this is equivalent to 8.5%
Hope this helps! :)
