Free ACT Practice Question

In the figure above, lines $MN$ and $CD$ intersect at $P$. Ray $OA$ is perpendicular to $MN$. Lines $EF$, $CD$ and ray $OA$ intersect at $B$. If lines $MN$ and $EF$ are parallel and $\angle MPD$ is $20^\circ$ more than $\angle ABC$, what is the measure of $\angle CBE$?