tutor2u | Explaining Fixed and Variable Costs of Production

Study Notes

Explaining Fixed and Variable Costs of Production

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

Last updated 25 Apr 2021

This study note and video provides a short introduction to fixed and variable costs for businesses in the short run

Fixed and Variable Costs

Key Terms

Average fixed cost: Fixed cost per unit AFC= TC/Q

Average total cost: AC = cost per unit = TC/Q

Average variable cost: Variable cost per unit; AVC = TVC/Q

Diminishing marginal productivity: Falling MP as more units of a variable factor are added to a fixed factor

Long run production: Time period where all factor inputs are variable

Marginal cost: MC is change in total cost from supplying one extra unit

Short run production: Time period when at least one factor input is fixed

Sunk cost: A cost that cannot be recovered in a business closes down or leaves an industry

Total cost: TC = total fixed cost + total variable cost

Total fixed cost: Costs that do not depend on the level of output in the short run

Total variable cost: Variable costs are costs that vary directly with the level of output

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