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UKMT Junior Mathematical Challenge, 2022

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

Kiwi fruit contain roughly two and a half times as much vitamin C as the same weight of oranges. What weight of kiwi fruit contains approximately the same amount of vitamin C as 1 kg of oranges?

(A) $100\text{ g}$ (B) $200\text{ g}$ (C) $250\text{ g}$ (D) $400\text{ g}$ (E) $550\text{ g}$

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