The table shows three different prices and quantities supplied per week of two products, X and Y. price of X ($) 10 15 20 quantity supplied of X 80 100 110 price of Y ($) 30 40 50 quantity supplied of Y 60 64 80 Which statement about price elasticity of supply (PES) is correct?
✓ Correct Answer
The correct answer is D: The PES of Y is unitary for a rise in its price from $40 to $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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