Maya highlighted the article like a surgeon. She underlined: “Farmers are switching to durian production.” That was opportunity cost. “Global demand for robusta beans has surged.” That was a demand shifter. The calculation? 12% price increase, 8% quantity decrease. PED = -0.67. Inelastic.
At first, she froze. Her mind was a tangle of elasticities and externalities. But then she forced herself to look past the panic and look into the structure of the question. The command terms: “Explain” (10 marks) and “Evaluate” (15 marks). The hidden trap: students often forget that “always” is the keyword in part (b). The IB examiners loved an absolute. Ib Econ Past Papers
Next, she pulled out Paper 2, November 2022. The insert was a news article about rising coffee prices in Vietnam due to a drought. The questions were brutal: calculate the PED, explain two supply-side factors, and evaluate the effectiveness of a price ceiling. Maya highlighted the article like a surgeon
The first paper she pulled out was Paper 1, May 2023 (TZ2). The title alone sent a shiver down her spine. She remembered her teacher, Mr. Choudhury, saying, “The past paper is a mirror. It shows you what you actually know, not what you hope you know.” The calculation