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Concordia Year 3 Economics Exam Practice: 9 Solved Problems (Micro, Macro, Econometrics)

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2026/2027 Written for academic year
Institution Concordia University ( )
Course Year 3 Economics
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9 exam-style economics problems at the advanced level, each with a full step-by-step solution, in the style of Concordia Year 3 economics. What's inside (7 pages, PDF): • Microeconomics (problems 1-3): Bertrand, Differentiated goods, Equilibrium • Macroeconomics (problems 4-6): Golden rule, Ramsey steady state, Comparison • Econometrics (problems 7-9): An experiment, Instrumental variable, Reading log models Every solution shows each intermediate value, so you can check your own work line by line. Ideal for midterm and final exam review. Unofficial practice modeled on public course descriptions for this level. Not affiliated with or endorsed by Concordia University. These are not past exams.

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Exam prep · Year 3 Concordia style · advanced level




9 problems
micro, macro, e
conometrics




Concordia
Year 3 practice Full solutions
every step worked o
ut

Advanced micro, advanced macro and econometrics: games, information,
dynamics and causal inference.




Unofficial practice based on public course descriptions for this level. Not affiliated with or
endorsed by Concordia University.

, Micro · Problems 1 to 3 Concordia · Year 3 style


Price competition
Problem 1 Problem 2 Problem 3
Bertrand Differentiated goods Equilibrium
Two firms sell an identical good, MC = q1 = 20 − 2p1 + p2 (symmetric for firm Same market.
$2 each, and compete on price. 2). MC = $2.
1. Equilibrium prices?
1. Equilibrium price? 1. Firm 1’s best response? 2. Quantity and profit per firm?
2. Profits?




Unofficial practice · Solutions on the next page · Concordia Year 3 style · 02

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