###Human: 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?, ### Assistant: Worker ants:110/2=55 ants
Male worker ants:55(.20)=11
Female worker ants:55-11=44 ants 
 So the answer is :  44