After understanding the perfectly competitive market and the fact that P determined by it is constant, it is easy to analyze that the average income AR= marginal income MR. P is the price, and it is also the profit of each commodity sold by the manufacturer. If p remains the same, then no matter how many goods the manufacturer sells, the average profit is p. For example, if a manufacturer sells n kinds of goods, the average profit is AR = NP/N = P, and the marginal revenue MR refers to the revenue of each unit of goods sold by the manufacturer, and P remains unchanged, so the revenue of each unit of goods sold by the manufacturer is always P, which will not change, that is, Mr = P.
So there is AR = MR = P. For a simple example, suppose that the product price of a manufacturer is P= 10 yuan and a * * production 10, then the average income is AR =10/10 yuan.