Expenditure minimization problem

The expenditure minimization problem is like a game. The goal of the game is to reduce spending as much as possible. For example, imagine you want to buy groceries. Your goal is to buy the same amount of groceries, but you want to spend as little money as possible. You need to know what the different prices of different products are in order to make the best decision. You also need to consider how much of each item to buy in order to get the most out of your money. The person with the least amount of money spent at the end of the game is the winner.