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There are 200 cats in Cat-City. Out of the 200, 70 are street cats and

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There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 05:58
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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.

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There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post Updated on: 17 Jun 2016, 10:16
1
Hi Bunuel,

The question is incorrect. IMO, it should be "30 of the gray cats are NOT domestic ones"

Originally posted by FacelessMan on 17 Jun 2016, 07:18.
Last edited by FacelessMan on 17 Jun 2016, 10:16, edited 1 time in total.
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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 07:51
1
Bunuel wrote:
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
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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 10:14
chetan2u wrote:
Bunuel wrote:
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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PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 11:07
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Bunuel wrote:
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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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 11:26
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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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 12:05
Bunuel wrote:
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 1429 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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There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 17 Jun 2016, 16:22
(200-70)-(110-30)=50 non gray domestic cats
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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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New post 19 Jun 2016, 02:34
110 gray cats including 80 domestic cats.
130 domestic cats in total.

So 130 - 80 = 50 non-gray domestic cats.
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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and  [#permalink]

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Re: There are 200 cats in Cat-City. Out of the 200, 70 are street cats and &nbs [#permalink] 17 Mar 2018, 02:28
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