4MA1/2F Jun 2021, Question 20: Percentage Increases and Decreases
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 4 marks
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The question, in short
Bags last week held 12 kg of seeds. Next week's 19.35 kg bags mix nuts and seeds in ratio 4 : 5. Find the percentage decrease in seed weight per bag, to one decimal place.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 4 marks
- 119.35 ÷ (4 + 5) = 2.15
- 22.15 × 5 = 10.75
- 3(12 − 10.75) / 12 × 100 = 1.25 / 12 × 100
- 41.25 / 12 × 100 = 10.416...
- 510.4
Answer10.4
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