If an action is considered ethical in one society or culture but unethical in another how do you determine if the action is ethical or unethical

Moral reasoning is the process by which we can attempt to determine whether an action is ethical or unethical.

Explanation:

There are two fundamental perspectives on this matter.

Ethical Relativism considers that absolute moral truths don´t exist; instead, truths are relative to their cultural context. This means that there are no right or wrongs if something that one society considers ethical is also considered unethical by another culture because moral values are relative to each society.

On the other hand, Kant's Categorical Imperative, which requires knowing the intention behind the action as well as its possible consequences, does state that universal moral guidelines can be produced. However, in reality, this approach leaves cultural context out of consideration.  

what is the tax base for the sales tax?

it should be (usually ) 6%