Siblings in Family Puzzle

Here we have solution for Siblings in Family Puzzle  – 

Let us denote the number of boys as ‘p’ and the number of girls as ‘q’.

The first statement says that each boy has equal numbers of brothers and sisters

 (p – 1) = q

  p – q = 1 ——-> Equation (a)

The second statement says that every girl has twice as many brothers as that of sisters

 2 (q – 1) = p

 2q – p = 2 ——->Equation (b)

By solving Equation (a) and Equation (b)

We get ‘q’ as 3 and ‘p’ as 4.

Therefore, there are 4 boys and 3 girls in the family.