In a town where 60% of the citizens own a pet, half own a dog and 30 own a cat. How many citizens are in the town?
Half the pet-owners have a cat because 1 - 1/2 = 1/2
There are 60 pet owners because 30 / (1/2) = <<30/(1/2)=60>>60
The town has 100 citizens because 60 / .6 = <<60/.6=100>>100
#### 100