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Algebra Difficulty 1.0 Junior Find the answer United Kingdom

One-eighth of the guests at a wedding were children. Three-sevenths of the adult guests were men. What fraction of the wedding guests were adult women?

(A) $\frac{1}{2}$ (B) $\frac{1}{3}$ (C) $\frac{1}{5}$ (D) $\frac{1}{7}$ (E) $\frac{3}{7}$

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Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.