Find the discount if the original price is $8.05 and the percent markdown is 10 % round to the nearest cent

Well if 100%= $8.05
then to find 10% you divide by 100.
10%=$0.85
You would then take this off of your original price. This is how I like to lay mine out:

  100%=$8.05
-   10%=$0.85
=   90%=$7.20

Therefore 90% of $8.05 is $7.20

Where are the