BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Equalities

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pm
Thanked: 331 times
Followed by:11 members

by cramya » Sun Jan 04, 2009 1:36 pm
Stmt I

With a<b a/a-b < b-a

Cases possible:
a-> positive b->positive
a->negative b->positive
a> more negative b->less negative (i.e |b| < |a|)

SUFF

Stmt II

|a-b| > 1

a>b or a<b

INSUFF

Choose A)
Top
Newbie | Next Rank: 10 Posts
Posts: 8
Joined: Tue Dec 02, 2008 3:46 am

Re: Equalities

by duccio » Mon Jan 05, 2009 7:55 am
poonam1279 wrote:Pls help

1 a<b
so a-b<0 and b-a>0
1/(a-b)<0 and b-a>0
b-a>1/(a-b)
suff

2 |a-b|>1
first case
a-b>1 if a-b>0 <---> a>b <----> b<a <---> b-a<0 and 1/(a-b)>0
hence b-a<1/(a-b)
or
b-a>1 if a-b<0 <---> b>a <----> b-a>0 and a-b<0 <---> b-a>0 and 1/(a-b)<0
hence b-a>1/(a-b)
two different values Insuff
A
Top
Post new topic Post Reply
• Page 1 of 1