Correct option is D
Given:
A boy says, "I have twice as many sisters as brothers"
A girl says, "I have the same number of brothers and sisters"
Solution:
Let the number of boys = b
Let the number of girls = g
From the boy’s statement:
Number of brothers = b − 1
Number of sisters = g
So, g = 2 × (b − 1)
From the girl’s statement:
Number of brothers = b
Number of sisters = g − 1
So, b = g − 1
From the second equation:
g = b + 1
Substitute into the first equation:
b + 1 = 2 × (b − 1)
b + 1 = 2b − 2
Solving:
3 = b
So, b = 3 and g = b + 1 = 4
Final Answer: (d) 4 and 3
(4 girls and 3 boys)
