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In the diagram, square $PQRS$ is divided into four identical squares.What percentage of square $PQRS$ is shaded?

Pick one

A $33\%$

B $40\%$

C $25\%$

D $50\%$

E $15\%$

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Official solution

One of four identical squares is shaded and so the fraction of square $PQRS$ that is shaded is $\tfrac14$ which is equivalent to $25\%$.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.