Marginal cost

Marginal cost is the cost of production of aditional per unit of product. The production cost are found to change in per unit with the increasing of total volume of output of the product. Let us explain marginal cost with an example. Let you are producing 100 pices of any specific product with the cost of 1000$. You increased your production volume of output into 150 pices and the cost is 1200$. The increased cost is about 200$. Increased output is 50 pices. The cost of per unit of output is 4$. But before increasing the output cost of per unit of production was 10$. Hence, it is clear that the cost of per unit of output is changed with the change of total volume of output.