M+Z > 0?

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chipbmk: Senior | Next Rank: 100 Posts; Posts: 70; Joined: Mon Oct 05, 2009 9:33 am

by chipbmk » Wed Nov 18, 2009 11:59 am

Is m + z > 0?

1. m - 3z > 0
2. 4z - m > 0

OA: C

Detailed responses would be helpful, thanks!

I got this one right, but I had to basically guess ... I am not sure how to justify it.

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Source: Beat The GMAT — Data Sufficiency | Wed Nov 18, 2009 11:59 am

Testluv: GMAT Instructor; Posts: 1302; Joined: Mon Oct 19, 2009 2:13 pmFollowed by: 164 members; Location: Toronto; Thanked: 539 times; GMAT Score:800

by Testluv » Thu Nov 19, 2009 12:25 am

Please use the search function before posting!

https://www.beatthegmat.com/is-m-z-0-t48172.html

Kaplan Teacher in Toronto

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