A-LevelEconomicsBasic Economic Ideas and Resource AllocationOct/Nov 2013Paper 1 Q121 Mark
A consumer needed a new camera and a new armchair. She was prepared to spend $500 on one item. She discovered that the camera cost $450 and the armchair $500. She bought the camera. What was her opportunity cost and her consumer surplus? [Table 12.1]
Athe armchair, $50
Bthe armchair, $500
C$50, $450
D$450, $50
✓ Correct Answer
The correct answer is A: the armchair, $50
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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