Subject: mathqa
Question: in a factory , there are 40 % technicians and 60 % non - technicians . if the 60 % of the technicians and 40 % of non - technicians are permanent employees , then the percentage of workers who are temporary is ?
Option: 
A: 57 %
B: 42 %
C: 52 %
D: 22 %
Answer: C