A-LevelEconomicsBasic Economic IdeasMay/June 2018Paper 1 Q21 Mark

YX is an economy's production possibility curve (PPC). The equation of the curve is qY = 1000 – 2qX. [Figure showing a downward sloping straight line PPC from (0, 1000) to (500, 0) for output of good Y (qY) and good X (qX)] What is the opportunity cost of producing one extra unit of good X?

Q: What is the correct answer to this A-Level Economics question?

The correct answer is B: 2 units of good Y.

Q: What topic does this question test?

This question tests Basic Economic Ideas in A-Level Economics (syllabus code 9708). It is worth 1 mark.

A½ unit of good Y

B2 units of good Y

C500 units of good Y

D1000 units of good Y

✓ Correct Answer

The correct answer is B: 2 units of good Y

📋 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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About This A-Level Economics Question

Topic

This multiple-choice question tests Basic Economic Ideas in A-Level Economics (syllabus code 9708). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Economics May/June 2018 examination, Paper 1 Variant 2.

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