In a survey taken of 60 households, 40 households reported having a dog and 30 households reported having a cat. If half of all households having a cat also have a dog, how many households reported have neither a dog nor a cat?

Question

Mathematics

Yair Carpenter

24 June, 13:27

In a survey taken of 60 households, 40 households reported having a dog and 30 households reported having a cat. If half of all households having a cat also have a dog, how many households reported have neither a dog nor a cat?

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Answers (1)

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Conrad Sharp · Answer 1

So, if 30 housholds have a cat 30/2 is 15.

15 housholds have a cat and a dog

30-15 = 15 housholds have only cats

40-15=25 housholds only have dogs

25+15+15=55

60 housholds in total, so what is 60-55? < - - This will be your answer.