Introduction to Tax
This page introduces the terms bill-price, and tax. It explains that the seller collects the tax on behalf of government on the money transacted which is the sale-price and so the tax is calculated as a percent of the sale-price.
tax percent `= 100 xx` (bill price - sale price) `//` sale price.
This topic is not released for all, please contact firstname.lastname@example.org for access.