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UKMT Junior Mathematical Challenge, 2019

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

Sam has eaten three-quarters of the grapes. What is the ratio of the number of grapes that remain to the number Sam has eaten?

(A) $1:3$ (B) $1:4$ (C) $1:5$ (D) $1:6$ (E) $1:7$

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