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At my office, 16 people own cats, \(17\) people own dogs, and \(8\) people own both cats and dogs. How many people own a cat or a dog?

(Remember that in mathematics, the word "or" is used in the inclusive sense. So if you own both a cat and a dog, then you are included in the category of people "who own a cat or a dog".)

 Jan 24, 2022
 #1
avatar+23200 
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(Total Number of People Who Own Cats or Dogs)  = 

                                                 (Number of People Who Own Cats)                  

                                                       + (Number of People Who Own Dogs)

                                                                - (Number of People Who Own Both Cats and Dogs)

 

                     =  16 + 17 - 8  =  25

 Jan 24, 2022
 #2
avatar+36434 
+1

Here is a Venn Diagram of this scenario.....just add the numbers....

 

 Jan 24, 2022

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