At the Johnson family reunion, there were 45 children and one third as many adults.  One third of the adults wore blue.  How many adults did not wear blue?
How many adults were there? ** One third as many adults as children is 45/3=<<45/3=15>>15 adults.
How many adults wore blue? ** One third of adults wore blue, or 15/3=<<15/3=5>>5 adults wore blue.
How many adults did not wear blue? ** Thus, the remaining 15-5=<<15-5=10>>10 adults did not wear blue
#### 10