Pet Store Problem
Probability
Level
pending
At a pet store, there are 23 animals. Among the animals in the store, 15 are white,
5 are white dogs and 7 animals are neither dogs nor white. How many dogs
are at the pet store?
The answer is 6.
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1 solution
There are 23 animals. 7 are neither white nor dogs, so there can be 16 dogs. 15 are white animals and amongst them 5 are white dogs. Now only one animal is remaining which is a dog. So the total number of dogs is 5 plus 1 which is 6.