PASCAL 1997 Problem 16

Past Contests PASCAL PASCAL - 1997
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1

In the diagram, all triangles are equilateral. What fraction of \triangle{ABC} is colored black?
pascal 1997 16

Answer Choices
A. \frac34
B. \frac12
C. \frac{9}{16}
D. \frac49
E. \frac{27}{64}