I know this is primitive and simple but here goes. Don't pay attention to the arrows.
The circuit has 5 amps flowing.
If we look at each load and use E = I x R
The 36 ohm load would see 180 volts
5 x 36 = 180 volts
The 12 ohm load would see 60 volts
5 x 12 = 60 volts
180 + 60 = 240 volts.
I will practice before I post any more drawings.
Roger