Question

In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons are there in the family?

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

Answer:

B. 3

Let x and y represent the numbers of daughters and sons respectively. Then we have x-1= y and 2 (y-1)=x Solving these equations, we get x = 4, y = 3