Suppose That a Firm Has Only One Variable Input, Labor

question 225

Multiple Choice

Suppose that a firm has only one variable input, labor, and firm output is zero when labor is zero. When the firm hires 6 workers it produces 90 units of output. Fixed cost of production are $6 and the variable cost per unit of labor is $10. The marginal product of the seventh unit of labor is 4. Given this information, what is the total cost of production when the firm hires 7 workers?

• A)$66
• B)$76
• C)$906
• D)$946

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Definitions:

Short-Run

A period during which at least one input (for example, plant size, machinery) in the production process is fixed and cannot be changed.

Tangent

A straight line that touches a curve at a single point without crossing it, often used in geometry and calculus to represent the slope of the curve at that point.

Diseconomies of Scale

An economic concept referring to a situation where, as a firm expands, the costs per unit increase.

Long-Run Average Total Cost Curve

A graphical representation that shows the lowest average total cost at which a firm can produce any given level of output in the long run, where all inputs are variable.