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

Redeem

Inequality

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 am
Thanked: 146 times
Followed by:2 members

Re: Inequality

by parallel_chase » Sat Nov 01, 2008 1:08 am
crazy4gmat wrote:Is ¦x - y¦>¦x - z¦?
(1) ¦y¦>¦z¦
(2) x < 0

provide explanation plz..
Statement I
lyl > lzl
if x=5, y=-3, z=-2
lx - yl>lx - zl
8 > 7
if x =-5, y=-3,z=-2
lx - yl>lx - zl
2 < 3

Insufficient.

Statement II
x<0, we dont know anything about y and z. Insufficient.

Combining I and II
x<0
lyl > lzl

if x = -5, y=3, z=2
lx - yl>lx - zl
8>7

if x=-5, y=-3, z=-2
lx - yl>lx - zl
2 < 3

Insufficient.

Hence E.

OA?
No rest for the Wicked....
Top
Master | Next Rank: 500 Posts
Posts: 496
Joined: Sun May 04, 2008 11:01 pm
Location: mumbai
Thanked: 7 times
GMAT Score:640

Re: Inequality

by stubbornp » Sat Nov 01, 2008 1:17 am
crazy4gmat wrote:Is ¦x - y¦>¦x - z¦?
(1) ¦y¦>¦z¦
(2) x < 0

provide explanation plz..
stmt 1:|y|>|z|

two cases-both should be positive or negative--insufficient

Stmt 2-x<0...it does not give us any infor for y and z--insufficent

By combining both,it doesnt matter whether x is positive or negative..So both are also insufficient..IMO E
Top
Master | Next Rank: 500 Posts
Posts: 496
Joined: Sun May 04, 2008 11:01 pm
Location: mumbai
Thanked: 7 times
GMAT Score:640

Re: Inequality

by stubbornp » Sat Nov 01, 2008 1:21 am
crazy4gmat wrote:Is ¦x - y¦>¦x - z¦?
(1) ¦y¦>¦z¦
(2) x < 0

provide explanation plz..
stmt 1:|y|>|z|

two cases-both should be positive or negative--insufficient

Stmt 2-x<0...it does not give us any infor for y and z--insufficent

By combining both,it doesnt matter whether x is positive or negative..So both are also insufficient..IMO E
Top
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pm
Thanked: 237 times
Followed by:25 members
GMAT Score:730

Re: Inequality

by logitech » Sat Nov 01, 2008 2:16 am
crazy4gmat wrote:Is ¦x - y¦>¦x - z¦?
(1) ¦y¦>¦z¦
(2) x < 0

provide explanation plz..
In other words the question is asking whether the distance between X and Y is greater than the distance between X and Z

1) ¦y¦>¦z¦

No info about X and the sign of Y and Z - INSUF

2) x < 0 No info Y and Z - INSUF

1+2) we still dont know anything about signs of Y and Z

E
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Master | Next Rank: 500 Posts
Posts: 160
Joined: Fri Aug 22, 2008 4:54 am
Thanked: 5 times
GMAT Score:660

by crazy4gmat » Sat Nov 01, 2008 6:13 am
OA is E..good explanation parallel_chase..
Top
Post new topic Post Reply
• Page 1 of 1