# A boy says "i have as many brothers as i do sisters." His sister says i have twice as many brothers as i do sisters." How many brothers and sisters are in the family?

## the boy has 3 bros and 3 sisters

the girl has 4 bros and 2 sisters

theres 4 boys and 3 girls

2(s-1)=s+1
s=3
b-1=3
b=4

## To solve this problem, let's start by assigning variables to the number of brothers and sisters in the family. Let's use "B" to represent the number of brothers and "S" to represent the number of sisters.

According to the statement, the boy says he has as many brothers as he does sisters. So, we can write the equation: B = S.

Similarly, the sister says she has twice as many brothers as she does sisters. This can be written as: B = 2S.

We now have two equations: B = S and B = 2S. To find the solution, we need to solve the system of equations.

By substituting the value of B from the first equation into the second equation, we can get: S = 2S.

Now, we can solve for S by subtracting S from both sides: S - 2S = 0. This simplifies to -S = 0.

Dividing both sides of the equation by -1, we get S = 0.

If we substitute this value back into equation B = S, we find that B = 0 as well.

Therefore, according to the given information, the family has 0 brothers and 0 sisters. This means there are no siblings in the family.