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wolves

by AIM TO CRACK GMAT » Thu Jan 24, 2013 8:34 am
Each member of a pack of 55 wolves has either brown or blue eyes and either a white or a grey coat. If there are more than 3 blue-eyed wolves with white coats, are there more blue-eyed wolves than brown-eyed wolves?

(1) Among the blue-eyed wolves, the ratio of grey coats to white coats is 4 to 3.
(2) Among the brown-eyed wolves, the ratio of white coats to grey coats is 2 to 1.



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by Jim@StratusPrep » Thu Jan 24, 2013 10:04 am
(1) Among the blue-eyed wolves, the ratio of grey coats to white coats is 4 to 3.
(2) Among the brown-eyed wolves, the ratio of white coats to grey coats is 2 to 1.


Statement 1 allows you to enter information in the column label Blue Eyes, but does not give any way to compare the brown an blue eyed wolves - INSUFFICIENT.


Statement 2 allows you to enter information in the column label Brown Eyes, but does not give any way to compare the brown an blue eyed wolves - INSUFFICIENT.



Brown Eyes Blue Eyes Total
White Coat 2y 4x

Grey Coat y 3x

Total 3y 7x 55



Possible combinations of x and y you can achieve from the ratios given in both statement are as follows:



x = 1 and y = 16

Blue Eyed = 7

Brown Eyed = 48



x = 4 and y = 9

Blue Eyed = 28



Brown Eyed = 27



x = 7 and y = 2

Blue Eyed = 49

Brown Eyed = 6



There are instances with more brown-eyed wolves and others with more blue-eyed wolves. Insufficient.





The answer is E
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