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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
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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!!!
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by shankar.ashwin » Sat Oct 08, 2011 2:26 am
Posted a solution here
https://www.beatthegmat.com/animals-in-t ... tml#413963
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