What is total revenue , average revenue and marginal revenue ?Explain relationship among these​

Total revenue is the total amount of income that a firm obtains from selling goods or services. Average revenue is the average amount of income that a firm obtains for each unit of product , and marginal revenue is the extra amount of revenue that the firm obtains from the sale of one additional unit of product.

These three types of revenues have several relationships, for example, if total revenue increases more than total quantity, it means that marginal revenue is high. Another relationship is between marginal revenue and average revenue: when average revenue decreases, marginal revenue increases and viceversa.

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