4024/11 Oct/Nov 2025, Question 6: Fractions of amounts
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Sam eats 2/7 of a bar of chocolate and 350 g is left. Find the mass of the whole bar.
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Solution · 2 marks
- 1Remaining = 1 − 2/7 = 5/7 of the chocolate = 350 g
- 21/7 = 350 ÷ 5 = 70 g
- 3Total = 7 × 70 = 490 g
Answer490
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