Stephen has 110 ants in his ant farm.  Half of the ants are worker ants, 20 percent of the worker ants are male.  How many female worker ants are there?
##Solution## Worker ants:110/2=<<110/2=55>>55 ants
Male worker ants:55(.20)=11
Female worker ants:55-11=<<55-11=44>>44 ants
#### 44