kaplan #26

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magical cook: Master | Next Rank: 500 Posts; Posts: 484; Joined: Sun Jul 30, 2006 7:01 pmFollowed by: 1 member; Thanked: 2 times

by magical cook » Wed Aug 22, 2007 5:22 pm

36) If a and b is not =, what is the value of a+b?
1) a^2 – b^2 / a-b = 6
2) (a+b)^2 = 36

Hi
Can anyone help pls? correct answer will follow

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Source: Beat The GMAT — Data Sufficiency | Wed Aug 22, 2007 5:22 pm

joey: Newbie | Next Rank: 10 Posts; Posts: 7; Joined: Fri Jul 21, 2006 11:46 am

by joey » Wed Aug 22, 2007 8:57 pm

I am assuming that you meant to say a and b not =0
so from A we know a+b=6 SUFF
from B we know a+b=+/- 6 INSUFF

Ans A

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magical cook: Master | Next Rank: 500 Posts; Posts: 484; Joined: Sun Jul 30, 2006 7:01 pmFollowed by: 1 member; Thanked: 2 times

by magical cook » Thu Aug 23, 2007 7:32 am

you're right. Thanks !

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