Current in 20-ohm resistor with battery in parallel branch

[nothingsus]

Homework Statement

In the circuit shown, find the current in the 20-ohm resistor and the potential difference between points X and Y.

Homework Equations

The Attempt at a Solution

I've never really ran into a problem where the battery is in the parallel branches with resistors. The voltage drop of the parallel branch surely can't be 25V otherwise there would no voltage drop over the other resistors which are in series.

I am quite lost with this question. Could someone please explain in full how they got their answer?

Thanks.

 

[CWatters]

Rearrange/redraw the circuit so that it looks more familiar. eg with the battery on the left with +ve at the top...