+948 Dogs in the GoodDog Obedience School win a blue ribbon for learning how to sit, a green ribbon for learning how to roll over, and a white ribbon for learning how to stay. There are $100$ dogs in the school.
$62$ have blue ribbons, $55$ have green ribbons, and $82$ have white ribbons.
$45$ have a blue ribbon and a green ribbon; $36$ have a green ribbon and a white ribbon; $34$ have a blue ribbon and a white ribbon.
$12$ have all three ribbons.
