The hospital has 11 doctors and 18 nurses. If 5 doctors and 2 nurses quit, how many doctors and nurses are left?
There are 11 doctors - 5 doctors = <<11-5=6>>6 doctors left.
There are 18 nurses - 2 nurses = <<18-2=16>>16 nurses left.
In total there are 6 doctors + 16 nurses = <<6+16=22>>22 doctors and nurses left.
#### 22