There are 40 Judges in the state of Rhode Island.  10 percent of Judges are under 30 years old.  60 percent of Judges are 30-50 years old.  The rest of the Judges are over 50 years old.  How many Judges are over 50 years old?
Under 30: 40(.10)=4
30-50 years old:40(.60)=24
Over 50:40-4-24=12 Judges
#### 12