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UKMT Intermediate Mathematical Challenge, 2021

Geometry Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

The diagram shows a large square divided into squares of three different sizes. What percentage of the large square is shaded?

(A) $61\%$ (B) $59\%$ (C) $57\%$ (D) $55\%$ (E) $53\%$

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