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Bunuel
There are 200 cats in Cat-City. Out of the 200, 70 are street cats and the rest are domestic cats. 110 cats are gray, 30 out of the gray cats are domestic ones. How
many domestic cats are there which are not gray in Cat-City?

A. 90.
B. 80.
C. 50.
D. 40.
E. 25.

Hi Bunuel,
There seems to be some typo error...
200 ---- 70 street cats and 130 are therefore domestic...
again 200 ---- 110 are gray, so 90 are non-gray...
110 gray cats ---- 30 are domestic, so remaining 110-30 = 80 gray cats should be street cats... BUT the total street cats are ONLY 70
_______________
Edited. Thank you.
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Bunuel
There are 200 cats in Cat-City. Out of the 200, 70 are street cats and the rest are domestic cats. 110 cats are gray, 30 out of the gray cats are NOT domestic ones. How manydomestic cats are there which are not grayin Cat-City?

A. 90.
B. 80.
C. 50.
D. 40.
E. 25.

Answer will be (C)

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Answer is C.
SC=70,DC=130
GC=110,NGC=90

So SC,GC30 and DC,GC=80 NGC,SC=40 and NGC,DC=50

SC=stray cats
DC=domesticated cats
GC=Gray cats
NGC=Non Gray Cats
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Bunuel
There are 200 cats in Cat-City. Out of the 200, 70 are street cats and the rest are domestic cats. 110 cats are gray, 30 out of the gray cats are NOT domestic ones. How many domestic cats are there which are not gray in Cat-City?

A. 90.
B. 80.
C. 50.
D. 40.
E. 25.


Here's the information given in the question stem -

Attachment:
Cats.jpg
Cats.jpg [ 13.97 KiB | Viewed 10468 times ]


SC = Street Cat; DC = Domestic Cat

DC & Gray = Total Gray - SC & Gray = 110 - 30 = 80
DC & Not Gray = Total DC - DC & Gray = 130 - 80 = 50

My answer is C.
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(200-70)-(110-30)=50 non gray domestic cats
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110 gray cats including 80 domestic cats.
130 domestic cats in total.

So 130 - 80 = 50 non-gray domestic cats.
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Bunuel
There are 200 cats in Cat-City. Out of the 200, 70 are street cats and the rest are domestic cats. 110 cats are gray, 30 out of the gray cats are NOT domestic ones. How many domestic cats are there which are not gray in Cat-City?

A. 90.
B. 80.
C. 50.
D. 40.
E. 25.

Since 70 are street cats, 130 are domestic.

Since 110 are gray, 90 are not gray.

Of the 110 gray cats, there are 30 gray cats that are street cats, so there are 110 - 30 = 80 gray cats that are domestic.

Thus, there are 130 - 80 = 50 cats that are domestic and not gray.

Answer: C
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