What Is Relationship Between Marginal Revenue And Marginal Cost?

Marginal Revenue is an additional revenue that an extra unit of product will bring to an organization. It is the change in total revenue/change in number of units sold.
On the other hand, marginal cost is the change in total cost which arises when the quantity produced changes by one unit.

The point at which MR=MC is the point of profit maximization. Any additional production beyond MR=MC results in greater profits, but those profits are tempered by higher production, with the result that each additional output yields an increasingly smaller additional return.  Below MR=MC, the firm has unrealised profit potential in that additional output - which is not being made - could provide a higher per-unit profit.