CSS 2021 Economics Paper I

Define Price, Income, and Cross-Price Elasticity of Demand. Explain the importance of these concepts for a business firm in decision making and price determination.

Explain the relationship between Average Cost (AC), Marginal Cost (MC), and Average Variable Cost (AVC) in the short run. Why is the long-run average cost curve (LAC) called an 'envelope curve'?

What is a Nash Equilibrium? Explain the concept using the 'Prisoner’s Dilemma' game. How is this relevant to the behavior of firms in an Oligopolistic market?

Explain the concept of the Investment Multiplier. How is its value determined by the Marginal Propensity to Consume? Discuss the leakages that reduce the size of the multiplier.

What are the tools of Monetary Policy? Explain how the Central Bank uses 'Open Market Operations' and 'Discount Rate' to control inflation in an economy.

Discuss the Solow Growth Model. How do changes in the savings rate and population growth affect the steady-state level of capital per worker and output per worker?

Using Cramer's Rule, solve the following system of linear equations: 2x + 3y = 13 and x - 2y = -4. Show all steps clearly.