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4MA1/2FR Jun 2022, Question 17: Constructing Equations

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 3 marks

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The question, in short

Using a number machine that multiplies hours by 12, adds 50, then multiplies by 0.2, write a formula for tax T in terms of hours n.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Solution · 3 marks

  1. 1n hours → multiply by 12: 12n
  2. 2add 50: 12n + 50
  3. 3multiply by 0.2: 0.2(12n + 50)
  4. 4T = 0.2(12n + 50)

AnswerT = 0.2(12n + 50)

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