Задача 31544.

By the capacitance of the capacitor 2 uF capacitors charged to a potential difference of 60 V and disconnected from the voltage source, is connected in parallel a second uncharged capacitor 1 uF. To determine the potential difference after the connection and the charge on the capacitors.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.