Alyana has a pizza that is cut into 16 slices. After she and her friends finish eating, there are 4 slices left. If each of them ate 2 slices of pizza, how many people ate the pizza?
16 - 4 = <<16-4=12>>12 slices of pizza were eaten.
So there were 12/2 = <<12/2=6>>6 people eating the pizza.
#### 6