Quiz on Short-Run Production Costs for Economics 101

📚 Quick Study Guide

• 🏭 Total Cost (TC): The sum of all costs of production. $TC = TFC + TVC$
• fixed costs
• Variable Costs (TVC): Costs that change with the level of output. Example: Labor, raw materials.
• Average Fixed Cost (AFC): Fixed cost per unit of output. $AFC = \frac{TFC}{Q}$
• 🧪 Average Variable Cost (AVC): Variable cost per unit of output. $AVC = \frac{TVC}{Q}$
• 🔢 Average Total Cost (ATC): Total cost per unit of output. $ATC = \frac{TC}{Q}$ or $ATC = AFC + AVC$
• 📈 Marginal Cost (MC): The change in total cost resulting from producing one more unit of output. $MC = \frac{\Delta TC}{\Delta Q}$
• 💡 Law of Diminishing Returns: As more variable inputs are added to fixed inputs, the marginal product of the variable input will eventually decrease.

Practice Quiz

1. Which of the following is an example of a fixed cost?
   1. A) Raw materials
   2. B) Labor wages
   3. C) Rent on a factory
   4. D) Electricity bill
2. What is the formula for calculating Average Total Cost (ATC)?
   1. A) $ATC = TFC + TVC$
   2. B) $ATC = \frac{TVC}{Q}$
   3. C) $ATC = \frac{TC}{Q}$
   4. D) $ATC = \frac{TFC}{Q}$
3. If Total Fixed Cost (TFC) is $100 and output (Q) is 10, what is the Average Fixed Cost (AFC)?
   1. A) $10$
   2. B) $1000$
   3. C) $0.1$
   4. D) $90$
4. Marginal Cost (MC) is the change in total cost resulting from:
   1. A) Producing one less unit of output
   2. B) Producing one more unit of output
   3. C) Increasing fixed costs
   4. D) Decreasing variable costs
5. According to the Law of Diminishing Returns, what happens as more variable inputs are added to fixed inputs?
   1. A) Marginal product increases at an increasing rate
   2. B) Marginal product increases at a decreasing rate
   3. C) Marginal product decreases
   4. D) Total product decreases
6. Which of the following costs is most likely to be a variable cost?
   1. A) Insurance premiums
   2. B) Property taxes
   3. C) Salaries of administrative staff
   4. D) Cost of direct labor
7. If Total Cost (TC) is $500 and Total Fixed Cost (TFC) is $200, what is the Total Variable Cost (TVC)?
   1. A) $700$
   2. B) $300$
   3. C) $2.5$
   4. D) $0.4$