Playlist title GMAT Official Guide 12th Ed. Math Explanations Part 2 of 3 Video source Magoosh GMAT Video category GMAT Watch more videos: Boats and Streams in Time, Speed & Distance (CAT/CMAT/GRE/GMAT) GMAT Official Guide 12: Data Sufficiency 37 GMAT Official Guide 12: Data Sufficiency 34 SAT Prep - Aaron - Instructor GMAT Official Guide 12: Problem Solving 132 GMAT Official Guide 12: Data Sufficiency 172