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UKMT Intermediate Mathematical Challenge, 2015

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The diagram shows a shaded region inside a large square. The shaded region is divided into small squares. What fraction of the area of the large square is shaded?

(A) $\frac{3}{10}$ (B) $\frac{1}{3}$ (C) $\frac{3}{8}$ (D) $\frac{2}{5}$ (E) $\frac{3}{7}$

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