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 street ones. How many domestic cats are there which are not gray in Cat-City?
a) 90
b) 80
c) 50
d) 40
e) 25
Correct answer is option 'C'. Can you explain this answer?

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Answers

PUNITH KAMINI S
Aug 04, 2019
Out of 200 cats, 130 are domestic ones. Out of 110 gray cats, 30 are street cats therefore 80 are grey and domestic ones.
Altogether there are 130 domestic cats, 80 are grey so (130 – 80) = 50 are not grey.

Mercy Muriu
Oct 17, 2019
I have a problem with this question. They say that 30 out of the gray cats are domestic cats but in the solution they contradict this to mean that 30 out of the gray cats are street cats.

Out of 200 cats, 130 are domestic ones. Out of 110 gray cats, 30 are street cats therefore 80 are grey and domestic ones.Altogether there are 130 domestic cats, 80 are grey so (130 – 80) = 50 are not grey.
Out of 200 cats, 130 are domestic ones. Out of 110 gray cats, 30 are street cats therefore 80 are grey and domestic ones.Altogether there are 130 domestic cats, 80 are grey so (130 – 80) = 50 are not grey.