If 80 percent of the subject expert are females and number of male subject expert is 25, number of female subject expert is ?

Dear Student,

Let total experts be x.
Here, % of female experts = 80%
% of male experts = 100% - 80%  = 20 %
No of male subject expert =25
Therefore, 20 % of x= 25
$$\begin{gathered} \frac{20}{100}\times \left(x\right) = 25 \\ x =\frac{25 \times 100}{20}=125 \end{gathered}$$
So, no of female experts = 125 -25 =100

Regards