Answer:
The gender ration males to females = 25:16
For every 100 males, there are 64 females.
Explanation:
The number of males in the group = 125
The number of females in the group = 80
The gender ratio from males to females =

Now we can reduce the ratio by dividing both the numerator and the denominator by 5.
=

So, the gender ration males to females = 25:16
This means for every 25 males, there are 16 females.
So, for every 100 males, females = 16 times 4 = 64 females.
Therefore, for every 100 males, there are 64 females.