Question

Question 8 of 40 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? O 2 brothers and 5 sisters O 4 brothers and 3 sisters O 3 brothers and 3 sisters O 3 brothers and 4 sisters​

Answer 1

Answer:

4 brothers and 3 sisters

Explanation: Let no. of brothers be x, sisters be y

According to question when A( brother) is saying :-

x-1 = y, therefore x-y = 1 -> (i)

When B(sister) is saying

x = 2(y-1), therefore x-2y = -2 -> (ii)

On subtracting i & ii

y = 3

Put value of y in eq i

x-3=1

x=4

Therefore Brothers are 4 and sisters are 3