Question

10. Anirudh has as many sisters as brothers. Anu, Anirudh's sister, has twice the number of
brothers as she has sisters. Find how many brothers and sisters Anirudh has?​

Answer 1

3 brothers and 3 sisters.

Step-by-step explanation:

As per the question,

Let the number of brothers and sisters be B(Brother) and S(sister),

Total no. of boy kids = B + 1(number of brothers + Anirudh himself)

Total number of girls = S

Anu has = (S - 1) Sisters  because (Total number of Girls - Anu)

Since we know that,

Anu has twice the number of brothers as compared to sisters

 2(S - 1)  = B + 1

2(B - 1) = B + 1  (because S = B)

2B - 2  = B + 1

= B = 3

Thus, S = 3 also

∵ Anirudh has 3 brothers and 3 sisters.

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