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4MA1/1HR Jun 2020, Question 5: Percentage Increases and Decreases

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1HR (Higher) · Calculator · 6 marks

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The question, in short

Given village populations of 7500 in 2017 and 8265 in 2019, find the percentage increase; also find a T-shirt's normal price when reduced by 30% to 31.50 euros.

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

Part (a) · 3 marks

Calculate the percentage increase in the village population from 7500 in 2017 to 8265 in 2019.

  1. 18265 − 7500 = 765
  2. 2765 / 7500 = 0.102
  3. 30.102 × 100 = 10.2

Answer10.2

Part (b) · 3 marks

Find the normal price of a T-shirt whose sale price is 31.50 euros after a 30% reduction.

  1. 131.50 ÷ (1 − 0.3) = 31.50 ÷ 0.7
  2. 231.50 ÷ 0.7 = 45

Answer45

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