How to determine the break-even point?

Question

Mathematics

Hello, please help me calculate the break-even point of the price of the goods. Those. find the formula under the following conditions:
There is a purchase price of goods (Z), there is a turnover bought + sold (O) and there is a turnover tax (N). How to calculate the price of goods so as not to "burn out"? Those. the minimum value of the goods for sale, such that the sale of the goods covers the purchase price + VAT. Thank you!

Answer 1

Let's start with the fact that the turnover is not bought + sold, but simply sold.
en.wikipedia.org/wiki/%D0%92%D1%8B%D1%80%D1%83%D1%...
Proceeding from this:
You buy goods for Z +, in fact, you incur some other costs (logistics, salary, etc.) let there be a payroll
Selling goods, you get O * (1-N) (if the tax is a percentage)
Obviously, for successful operation it is necessary that Z + payroll <= O * (1-N)
Or speaking in Russian - any costs that you bear (and the purchase of goods is also an expense) must be less than or equal to your income.