In supermarkets usually from 10 to 20 cash.But only always work 2-3.Explain:why the rest?Governor what will come to charge?"

The so-called "Russian mentality" - According to the rules of trade, a certain amount of cash is required for a certain metering of the trading area. That’s why they make 10-20 cash. But the rules do not say anything about whether they should work, and the working cashier is the cost (such as the cashier, service, etc.). That’s why they don’t work.