Network with series and parallel

The capacitors $C_1=6.0\mu \mathrm{F}$ and $C_2=3.0\mu \mathrm{F}$ are connected in series, and the series is connected in parallel with $C_3=4.0\mu \mathrm{F}$. The potential difference $\Delta V=30\mathrm{V}$ is applied to the network, initially uncharged. Compute the equivalent capacitance, the charge of each capacitor and the potential differences across $C_1$ and $C_2$.