14. 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 $53 \%$
14. B Let the squares on the border of the large square have side-length 1 . Then the large square has side-length 5 and area 25 . Note that 8 of the 16 squares on the border of the large square are shaded. The area of the central region of the large square is $25-16=9$. Three-quarters of this area is shaded.
Therefore, the fraction of the large square which is shaded is $\frac{8+\frac{3}{4} \times 9}{25}=\frac{32+27}{100}=\frac{59}{100}$. So $59 \%$ of the large square is shaded.