A study of pets in households was done.
34% of houses had at least one cat
39% of houses had at least one dog
60% have a cat or a dog
1. What percent has no cats or dogs at all?
2. What percent has both a cat and dog?
I was confused by the 60% have a cat or dog...does this mean they have somthing, or that the have a cat OR a dog, but not both?
SO what would you put for an answer?