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algebr_0019 [3 marks]

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Details

Topic: Algebra (Algebra and graphs)
Marks: 3
Tier: Extended
Style: Short answer
Calculator: Calculator-free
Status: Usable
Source: algebraclassified.pdf, page 20, 0580/21/M/J/10 (original Paper 2)
Import issues: None

Mark scheme not yet teacher-reviewed

Part	Answer	Mark	Guidance
	d = (2wc − 4w)/5	3	M1 for 2wc = 5d + 4w; M1 for 2wc − 4w = 5d. Accept equivalent forms, e.g. 2w(c − 2)/5

Used in papers

Paper 2 Non-calculator (Extended), question 20
Sample Paper 2 (Extended, non-calculator), question 10