MathNet 2019-part-02 — 184 problems (EN–VI) Question 37

In the figure below, $D$ is the midpoint of the side $AB$, $CE:DE=5:3$ and $BF:EF=1:3$. If the area of the triangle $ABC$ is $192~\mathrm{cm}^2$, determine the area of the triangle $BDF$.