+850 I need a Venn Diagram for this
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.
$58$ have blue ribbons, $57$ have green ribbons, and $39$ have white ribbons.
$36$ have a blue ribbon and a green ribbon; $22$ have a green ribbon and a white ribbon; $15$ have a blue ribbon and a white ribbon.
$13$ have all three ribbons.
