Question

Two persons, A and B, are having a conversation.
A says to his sister B, "I have as many sisters as brothers."
B tells her brother, "I have twice as many brothers as sisters."
How many brothers and sisters are there?
0 2 brothers and 5 sisters
O 4 brothers and 3 sisters
O 3 brothers and 3 sisters
03 brothers and 4 sisters​

Answer 1

Answer:

sisters = 3, brothers= 4

Explanation:

let us consider

B = number of boys, g = number of girls

the boy says b-1=g ( the number of boys other than me equal to the number of girls)

the girl says 2(g-1)=B (twice the number of girls other than me equals the number of boys)

substituting for g in the second equation

2(b-1-1) =B,

given b=4, then g=4-1=3