A-LevelEconomicsThe Price System and the MicroeconomyOct/Nov 2016Paper 1 Q81 Mark

Goods X and Y are complements with a cross-elasticity of demand of -0.8. When the price of good X was $10, the quantity of good Y demanded was 2000 units per week. After a change in the price of good X, the demand for good Y increases to 2800 units per week. What is the new price of good X?

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

The correct answer is A: $5.00.

Q: What topic does this question test?

This question tests The Price System and the Microeconomy in A-Level Economics (syllabus code 9708). It is worth 1 mark.

A$5.00

B$6.80

C$13.20

D$15.00

✓ Correct Answer

The correct answer is A: $5.00

📋 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 The Price System and the Microeconomy in A-Level Economics (syllabus code 9708). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Economics Oct/Nov 2016 examination, Paper 1 Variant 2.

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