At my office, 16 people own cats, 9 people own dogs, and 5 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".)

Guest May 27, 2021

#1**+1 **

so we have 17-3+9-3=14+6=20 so 30 people own a cat or a dog

Alternate way:

there is 17+9-3=23 people we then do 23-3=20 people who own a cat or a dog

imbadatmath May 27, 2021