I know this is primitive and simple but here goes. Don't pay attention to the arrows.

[Linked Image]

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. [Linked Image] [Linked Image]

Roger