D and E are points on side AB and AC of $\triangle ABC$. DE is parallel to BC. If AD:DB = 1:2 and area of $\triangle ABC$ is 45 sq cm, what is the area (in sq cm) of quadrilateral BDEC?

D and E are points on side AB and AC of $\triangle ABC$. DE is parallel to BC. If AD:DB = 1:2 and area of $\triangle ABC$ is 45 sq cm, what is the area (in sq cm) of quadrilateral BDEC?
1). 20
2). 40
3). 15
4). 30

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