Topic Videos

Marginal Cost Explained

Level:
AS, A Level, IB
Board:
AQA, Edexcel, OCR, IB, Eduqas, WJEC

Last updated 23 Jul 2021

Using straightforward numerical examples, this short video introduces students to the concept of marginal cost.

Marginal Cost Explained

Why is marginal cost an important concept to understand?

Businesses aiming to make profits need to have an indication of the marginal cost of supplying extra output.

They can make higher profits providing the marginal cost is less than the marginal revenue.

If the marginal cost of increasing output is low, then a firm might benefit from expanding production because it will lead to a fall in the average (or unit) cost of supply.

Can marginal cost be hard to measure?

Many firms engaged in mass production do not change their output in single units. They might produce “batches” of extra output by adding more shifts to their factory production.

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