SOLUTION: In a survey of 68 pet owners, 20 said they own a dog, and 21 said they own a cat. 18 said they own both a dog and a cat. How many owned a cat but not a dog?

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Question 1061770: In a survey of 68 pet owners, 20 said they own a dog, and 21 said they own a cat. 18 said they own both a dog and a cat. How many owned a cat but not a dog?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
21 people own a cat, and 18 say they own both, so only 3 people own just a cat.