800GMAT Master | Next Rank: 500 Posts View User Profile Posts: 174 Joined: Mon Mar 26, 2007 5:51 am Thanked: 1 times DS 1 by 800GMAT » Mon Oct 29, 2007 10:41 am Is ab/c = 1? 1. a/c = 1 2. b/c = 1 Top Quote