4MA1/2H Jun 2018, Question 3: Percentage Increases and Decreases
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 4 marks
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The question, in short
Gopal earns 20000 rupees and Jamuna 19200 rupees monthly. Gopal gets an 8% rise; both then earn the same. Find Jamuna's percentage increase.
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Solution · 4 marks
- 18% of 20 000 = 0.08 × 20 000 = 1600
- 2Gopal's new pay = 20 000 + 1600 = 21 600
- 3Jamuna's new pay = 21 600 (same as Gopal)
- 4Increase for Jamuna = 21 600 − 19 200 = 2400
- 5(2400 ÷ 19 200) × 100 = 12.5
Answer12.5
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