Generation ... is a difference in attitude and behaviour between older people and younger people, which may cause them to argue. Выберите один ответ: a. circle b. gap c. line d. set

Self-service store is a concept in trade, in which the purchase of goods and services is made by the buyer independently, without the help of service personnel.
Cashier - cash of an enterprise or organization; a division of an enterprise that carries out cash transactions; as well as the room where such a unit is located.
The purchase price is the amount of money in exchange for which the seller is willing to transfer (sell) a unit of goods.
Seller is a profession, specialty, person or organization that sells something.
Cashier - an employee who accepts, stores and records cash.
Change is the surplus money returned to the buyer upon settlement.