4MA1/1F Nov 2021, Question 20: Reverse Percentages
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 3 marks
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The question, in short
Given Sydney's 2018 population of 5.48 million as 22% of Australia's total, calculate the national population, rounded to 3 significant figures.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 15.48 ÷ 0.22 = 24.909...
- 224.909... correct to 3 significant figures is 24.9
Answer24.9
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