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Short Run
In economics, the 'short run' refers to a production period where at least one input is considered fixed and cannot be changed; it does not denote a specific length of time. During this period, factors like a firm's capital stock (equipment, buildings), technology, or institutional arrangements are held constant, or are exogenous. For example, a company's factory size is fixed in the short run. In contrast, during the long run, the firm has the flexibility to vary these inputs, such as by buying more equipment or selling some of it.
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Estimating Marginal Cost
Decreasing Marginal Cost
Marginal Cost as the Derivative of the Total Cost Function
A firm's total cost to produce a quantity (Q) of a good is given by the function C(Q) = 100 + 5Q + 2Q². What is the marginal cost of production when the firm is producing 10 units?
Analyzing Production Costs
A firm's total cost (TC) of production changes as the quantity (Q) of output changes. The marginal cost (MC) represents the slope, or rate of change, of the total cost curve. Below are descriptions of four different total cost curves. Match each total cost curve to the description of the marginal cost curve it implies.
Marginal vs. Average Cost Decision-Making
A company observes that its total cost to produce 10 widgets is $500. When it increases production to 11 widgets, its total cost rises to $540. Based on this information, the marginal cost of producing the 11th widget is equal to the average total cost of producing 11 widgets.
Relationship Between Total Cost and Marginal Cost
A company's total cost to produce 200 units of a product is $5,000. When it increases production to 201 units, its total cost rises to $5,025. Based on this information, the marginal cost of producing the 201st unit is $____.
A firm's production schedule shows the total cost associated with different levels of output. Based on the data provided in the table below, arrange the following production intervals in ascending order (from lowest to highest) of their marginal cost.
Quantity (Q) Total Cost (TC) 0 $100 10 $200 20 $400 30 $700 40 $1100 A company manufactures widgets and sells them for a constant price of $15 each. The company is currently producing 1,000 widgets per week. At this level of production, the firm calculates that the additional cost to produce one more widget (the 1,001st) would be $12. Assuming the company's goal is to maximize its profit, what is the most logical immediate action for the firm to take based only on this information?
The graph of a firm's total cost (TC) as a function of output quantity (Q) is shown. A tangent line drawn to the curve at an output level of Q1 is visibly less steep than a tangent line drawn to the curve at a higher output level of Q2. Based on this graphical information, what can be concluded about the firm's marginal cost (MC) at these two points?
A company's total cost (C) to produce a quantity (Q) of a product is described by the function C(Q) = 200 + 10Q + 0.25Q². What is the additional cost the company will incur to produce the 21st unit?
Analyzing Cost Behavior
Analyzing the Shape of Cost Curves
Consider a firm's total cost curve plotted on a graph, with total cost on the vertical axis and quantity of output on the horizontal axis. The curve starts at a positive cost value on the vertical axis, initially rises at a decreasing rate (becoming flatter), and then begins to rise at an increasing rate (becoming steeper). This creates a curve with a distinct inflection point. At which point on this curve would the firm's marginal cost be at its minimum?
Production Decision Analysis
A manufacturing firm observes that for every additional unit it produces, the cost to produce that specific unit remains constant. Which of the following statements best describes the firm's total cost curve when plotted with cost on the vertical axis and quantity on the horizontal axis?
A firm is currently producing at a level of output where the cost of producing one more unit is greater than the average total cost per unit. If this firm decides to increase its production by one unit, what will be the effect on its average total cost?
A firm's total cost (C) of producing a quantity of output (Q) can be represented by a mathematical function. The shape of this function determines the behavior of the additional cost incurred for each new unit produced. Match each total cost function below with the description of its corresponding marginal cost behavior.
If a firm's total cost of production is increasing as it produces more output, its marginal cost must also be increasing.
Analyzing Marginal Cost Behavior from a Total Cost Function
Monopoly Profit Maximization
Increasing Marginal Cost in the Short Run
Short Run
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Increasing Marginal Cost in the Short Run
A small furniture company experiences a sudden surge in orders for its handmade wooden chairs. The company can immediately hire more woodworkers and purchase more lumber. However, acquiring and installing new specialized cutting machinery would take at least six months. Given this situation, which statement best illustrates the economic production period where at least one input is fixed?
Production Decisions at a Manufacturing Plant
In economic analysis, the 'short run' is defined as any production period that is less than one calendar year.
Pizzeria Production Decisions
Match each scenario to the economic concept it best illustrates.
Implications of Fixed Inputs in Production
A coffee shop experiences a sudden, massive increase in daily customers after a viral social media post. The shop's physical space and the number of espresso machines are unchangeable for the next several months. To meet this new demand, which of the following adjustments represents a decision made within the constraints of this production period?
In the context of production, the period in which a firm can change its variable inputs like labor but cannot change at least one of its inputs, such as its factory size, is known as the ____ run.
A small bakery's artisanal bread becomes incredibly popular, leading to a sustained increase in demand. Arrange the following actions the owner might take in a logical sequence, from the most immediate responses possible with existing infrastructure to the most long-term strategic changes.
A bicycle manufacturing company observes a significant and sustained increase in demand for its products. In the immediate production period, the company can schedule more overtime for its existing workforce and purchase more raw materials like steel and rubber. However, building a new assembly line would take over a year. Which of the following statements most accurately analyzes the company's situation in this immediate period?