CEMC Cayley, 2005

Geometry Difficulty 2.0 Junior Find the answer Canada

$ABCD$ is a rectangle, with $M$ the midpoint of $BC$ and $N$ the midpoint of $CD$ . If $CM = 4$ and $NC = 5$ , what percent of the area of the rectangle is shaded?

(A) $70$ (B) $78$ (C) $80$ (D) $87.5$ (E) $75$

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