Question 82217
Hello there,

I recategorised your question.

Let's call:

Bird Group #1 = x

Bird Group #2 = y

If Bird Group #2's number is half of the other group, that means y = 0.5x.

If the total number of members in two groups plus the asking bird is 100, this means x + y + 1 = 100

So we have the following equations which we must solve to find the amount of birds:

y = 0.5x ---------(1)
x + y + 1 = 100 --(2)

Let's simplify (2): x + y = 99

Since we know y = 0.5x, we can substitute y into (2):

x + 0.5x = 99

0.5x = 99

x = 198 

Therefore, Group 1 has 198 birds and Group 2 has 0.5x birds which is 99 birds.