ECS1601 Assignment 2 – Complete
Solutions for 7 July 2025
University of South Africa – Economics IB (Macroeconomics I)
July 6, 2025
This document provides 100 comprehensive questions and answers for ECS1601 Assignment
2, Semester 2, 2025, covering key macroeconomics concepts to ensure success.
, Contents
1 Introduction to ECS1601 Assignment 2 . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Objectives of Assignment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Key Macroeconomics Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Circular Flow of Income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 National Income Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Money Market . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Inflation and Unemployment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 100 Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Q1: What is the primary purpose of macroeconomic theory? . . . . . . . . . . 3
3.2 Q2: What is the circular flow of income? . . . . . . . . . . . . . . . . . . . . . 3
3.3 Q3: Which of the following is a leakage in the circular flow? . . . . . . . . . . 3
3.4 Q4: What are injections in the circular flow? . . . . . . . . . . . . . . . . . . . 3
3.5 Q5: How is GDP calculated using the expenditure approach? . . . . . . . . . . 3
3.6 Q6: What is the difference between nominal and real GDP? . . . . . . . . . . . 3
4 Practical Examples and Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Example 1: Multiplier Calculation . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Sensitivity Analysis and Key Metrics . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Sensitivity Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Key Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Common Mistakes and Tips for Success . . . . . . . . . . . . . . . . . . . . . . . 9
6.1 Common Mistakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2 Tips for Success . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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Solutions for 7 July 2025
University of South Africa – Economics IB (Macroeconomics I)
July 6, 2025
This document provides 100 comprehensive questions and answers for ECS1601 Assignment
2, Semester 2, 2025, covering key macroeconomics concepts to ensure success.
, Contents
1 Introduction to ECS1601 Assignment 2 . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Objectives of Assignment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Key Macroeconomics Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Circular Flow of Income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 National Income Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Money Market . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Inflation and Unemployment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 100 Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Q1: What is the primary purpose of macroeconomic theory? . . . . . . . . . . 3
3.2 Q2: What is the circular flow of income? . . . . . . . . . . . . . . . . . . . . . 3
3.3 Q3: Which of the following is a leakage in the circular flow? . . . . . . . . . . 3
3.4 Q4: What are injections in the circular flow? . . . . . . . . . . . . . . . . . . . 3
3.5 Q5: How is GDP calculated using the expenditure approach? . . . . . . . . . . 3
3.6 Q6: What is the difference between nominal and real GDP? . . . . . . . . . . . 3
4 Practical Examples and Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Example 1: Multiplier Calculation . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Sensitivity Analysis and Key Metrics . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Sensitivity Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Key Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Common Mistakes and Tips for Success . . . . . . . . . . . . . . . . . . . . . . . 9
6.1 Common Mistakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2 Tips for Success . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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