I'm working on the Premier question in the Kaplan exam kit and I'm stumped when it comes to the net assets workings. Retained earnings for the subsidiary at acquisition is deemed to be 4,200 (reporting date R.E.) - 3,900 (4/12). The subsidiary was acquired 4 months ago so I understand where that figure comes from but can't figure out where 3,900 comes from.
Have any of you attempted this question? Do you know where 3,900 comes from?