Looking for an answer companion for the Official Guide 2015. The answer explanations so far in this book are skimpy.
I know GMAT Fix has an OG answer companion for the 12th edition. Anyone know of such a book for the 2015 (13th) edition?
I know GMAT Fix has an OG answer companion for the 12th edition. Anyone know of such a book for the 2015 (13th) edition?


















