Geometry Essentials · Easy problem

Rays $\overrightarrow{OB}$ and $\overrightarrow{OC}$ lie in the interior of $\angle AOD$. If $m\angle AOD = 150^\circ$, $m\angle AOB = 55^\circ$, and $m\angle COD = 60^\circ$, find $m\angle BOC$.