UKMT Grey Kangaroo, 2026

Algebra Difficulty 2.0 Junior Find the answer United Kingdom

Mirko the mouse has three different-sized blocks of cheese, each made up of identically-sized small cubes, as shown in the diagram. He ate 40% of the first block, 40% of the second and 20% of the third. What percentage of the total amount of cheese did Mirko eat?

(A) $21\%$ (B) $22\%$ (C) $23\%$ (D) $24\%$ (E) $25\%$

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