+359 In the trapezoid $ABCD$, $\overline{AB}$ is parallel to $\overline{CD}$, $AB = \frac{2}{5} CD$, and point $P$ lies on $\overline{AB}$. What is the ratio of the area of triangle $DPC$ to the area of trapezoid $ABCD$? Express your answer as a common fraction.
