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

Redeem

Quickest possible way to solve this DS quesiton?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Sat May 17, 2008 8:58 am
Location: Mexico

by Alejandro » Sun May 18, 2008 3:46 pm
Hi, the answer its b, because if you know that y is multiple of x yo also know that y and x are related, so even in you multiply by 2 you will have a multiple of y, statement 1 is insufficient because you dont know if the +2 wil give you a multiple
Top
Legendary Member
Posts: 631
Joined: Mon Feb 18, 2008 11:57 pm
Thanked: 29 times
Followed by:3 members

by netigen » Sun May 18, 2008 3:56 pm
x=3 and y=6
2x=6 so y is a multiple

x=4 and y=12
2x=8 so y is not a multiple

b does not hold in this case
Top
Senior | Next Rank: 100 Posts
Posts: 84
Joined: Tue Feb 05, 2008 8:52 pm
Thanked: 8 times

by luvaduva » Mon May 19, 2008 12:19 am
Picking numbers is the quickest way.

This problem is in the Kaplan 800 guide.

For (1) and (2):

x = 2, y = 6 => (2x +2)/y = 1; y/x = 3; 2x/y = 4/6 - Not integer
x = 2, y = 2 => (2x +2)/y = 3; y/x = 1; 2x/y = 2 = Integer

Not Sufficient.

E is OA
Top
Master | Next Rank: 500 Posts
Posts: 468
Joined: Sat Mar 03, 2007 10:17 pm
Thanked: 5 times

by moneyman » Mon May 19, 2008 6:59 am
I agree ..Ans should be E
Maxx
Top
Post new topic Post Reply
• Page 1 of 1