In a survey of 114 pet owners, 70 sald they own a dog' and 15 said they own a cat: 11 sald they own both a dog and a cat: How many owned a cat but not a dog?
Added by Robert B.
Step 1
We know that 70 people own a dog and 11 people own both a dog and a cat. Therefore, the number of people who own only a dog is 70 - 11 = 59. Show more…
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