Target Test Prep 20% Off Flash Sale is on! Code: FLASH20

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

Zoo

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 22
Joined: Sat Oct 08, 2011 2:19 am

Zoo

by boltu_gmat » Sat Oct 08, 2011 2:21 am
A zoo has w wildebeests, y yaks, z zebras, and no other animals. If an animal is chosen
at random from the zoo, is the probability of choosing a yak greater than the
probability of choosing a zebra?

1) y/w+z>1/2
2) z/w+y<1/2
Top
User avatar
Legendary Member
Posts: 540
Joined: Sat Dec 20, 2008 7:24 pm
Thanked: 37 times
Followed by:6 members

by navami » Sat Oct 08, 2011 2:23 am
Statement 1
y/w+z>1/2
y>(w+z)/2 Insufficient

Statement 2
z/w+y<1/2
z<(w+y)/2 Insufficient

Statement 1 and 2
This time no looking back!!!
Navami
Top
Legendary Member
Posts: 966
Joined: Sat Jan 02, 2010 8:06 am
Thanked: 230 times
Followed by:21 members

by shankar.ashwin » Sat Oct 08, 2011 2:26 am
Posted a solution here
https://www.beatthegmat.com/animals-in-t ... tml#413963
Top
Post new topic Post Reply
• Page 1 of 1