Minority Interests and Total Shareholders Equity statements, interest, included, because

dreampak

I'm a little bit confused. If anyone could clarify, it would be most appreciated.

AM MOCK #36, asks what the total shareholder's equity will be if consolidated financial statements are created on the day of the acquisition.

The answer is 1800 which is derived from 1300 (Equity A) + 500 (minority interest).

This does not make sense, because ROE should be the same under all methods (equity, prop, and consolidation). But if minority interest is included in total shareholders equity, wouldn't it make the ROE for consolidations and equity method not equal?