4MA1/2FR Jan 2021, Question 17: Reverse Percentages
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 3 marks
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The question, in short
Wednesday petrol costs £1.26 per litre, which is 5% above Monday's price. Work out the cost of 30 litres at Monday's price.
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Solution · 3 marks
- 1Wednesday is 5% more, so Monday price × 1.05 = 1.26
- 2Monday price = 1.26 ÷ 1.05 = £1.20 per litre
- 330 litres cost 30 × 1.20 = 36
Answer36
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