Business Costs and Production

Chapter 8: Business Costs and Production

Cost Advantages of Large Firms

• Large Firms

  • Achieve lower costs through:

  • Bulk purchasing powers

  • Extensive distribution networks

  • Increased use of machinery for automated production

• Small Firms

  • More nimble and responsive to market trends

  • Ability to undercut large firms due to more flexible production methods

Calculations

• Total Revenue

  • Definition: The total amount a business receives from the sale of goods and services.

• Total Cost

  • Definition: The total amount spent to produce and sell goods.

• Profit

  • Definition: More total revenue than total cost.

• Loss

  • Definition: Less total revenue than total cost.

• Formula for Profit/Loss:
  Profit = Total Revenue - Total Cost

Costs Breakdown

• Explicit Costs

  • Definition: Tangible out-of-pocket expenses such as:

  • Workers' wages

  • Utility bills (electricity, etc.)

  • Advertising costs

• Implicit Costs

  • Definition: Costs of resources already owned, where no direct payment is made. Also known as Opportunity Costs (OPP Costs).

  • Example: Using personal funds for a business means losing earning potential from interest that could be gained from a bank.

Total Cost Calculation

• Total Cost Formula:
  Total Cost = Explicit Costs + Implicit Costs

Profit Calculations

• Accounting Profit Formula: Accounting Profit = Total Revenues - Explicit Costs

  • Refers to amounts reported in financial statements.

• Economic Profit Formula: Economic Profit = Total Revenue - (Explicit Costs + Implicit Costs)

  • This can also be expressed as:
    Economic Profit = Accounting Profit - Implicit Costs

Production Function

• Definition: The relationship between the inputs a firm uses and the outputs it generates.

  • Firm’s Economic Profit: Focused on producing consumer-desired goods while maximizing economic profit.

Factors of Production

• Labor: The human workforce involved in production.

• Land: The geographical location utilized for production activities.

• Capital: All resources that workers utilize to create goods.

Marginal Product

• Definition: The additional output generated by adding one more unit of input.

• Marginal Product Formula:
  Marginal Product = (Output from n input units) - (Output from (n - 1) input units)

Diminishing Marginal Product

• Concept: A situation where additional inputs result in a progressively smaller increase in output.

Cost Classifications

• Variable Costs: Costs that change with the level of production output.

• Fixed Costs: Costs that remain constant regardless of output in the short run, such as rent and property taxes.

Average Costs

• Average Variable Cost (AVC): The total variable cost divided by the total output produced.
  AVC = rac{Total Variable Cost}{Output}

• Average Fixed Cost (AFC): The total fixed cost divided by the total output produced.
  AFC = rac{Total Fixed Cost}{Output}

• Average Total Cost (ATC): Calculated by either adding AVC and AFC or dividing total costs by total quantity. ATC = AVC + AFC

  • Or
    ATC = rac{Total Cost}{Quantity}

Marginal Cost

• Marginal Cost (MC): The cost of producing one more unit of output.

  • Behavior of MC:

  • Initially, as production increases, MC hits the lowest point.

  • As production expands further, if MC starts to rise, this signifies that AVC and ATC will eventually rise as well.

• Relationship with Average Costs:

  • When MC is less than AVC or ATC, it pulls their averages down.

  • When MC exceeds AVC or ATC, the averages start to increase.

• Intersection of Curves:

  • The MC curve intersects the AVC and ATC curves precisely at their lowest points, as demonstrated in graphs.

  • Example: ATC decreases between outputs of 60 and 70 due to a rapid decline in AFC, despite rising marginal variable costs.

Long-Term Changes in Firms

• Long-run Adjustments: Firms have the ability to adjust their scale or size of production based on market factors.

• Efficient Scale: Refers to the quantity of production that minimizes the average total cost over the long run.

Long-Run Scenarios

Trio of Possibilities in Long Run:

• Economies of Scale:

  • Condition where increasing output levels lead to declining average total costs in the long run.

• Diseconomies of Scale:

  • Condition when increasing output levels result in higher average total costs in the long run.

• Constant Returns to Scale:

  • Condition where long-run average total costs remain unchanged as output expands.