a doubt in undestanding teh sum

Ian Stewart: GMAT Instructor; Posts: 2621; Joined: Mon Jun 02, 2008 3:17 am; Location: Montreal; Thanked: 1090 times; Followed by:355 members; GMAT Score:780

Re: a doubt in undestanding teh sum

by Ian Stewart » Tue Sep 15, 2009 8:27 am

gmat20092009 wrote:roger sells twice as many as 20 tickets as thomas ..

That sentence is meaningless.

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