Family ages at birth (multi-relation): Find the sister’s age when Rahul was born.
At Rahul’s birth: Father was 32 years older than Rahul’s brother; Mother was 25 years older than Rahul’s sister.
Given now (at birth context): Rahul’s brother is 6 years older than Rahul; Mother is 3 years younger than Father.
How old was Rahul’s sister at Rahul’s birth? Choose the correct age.
Difficulty: Easy
Correct Answer: 10 years
Explanation:
Set ages at Rahul’s birth
Rahul = 0.
Brother = 6 (given “6 years older”).
Father = Brother + 32 = 6 + 32 = 38.
Mother = Father − 3 = 35.
Sister’s age Mother was 25 years older than sister ⇒ Sister = 35 − 25 = 10.
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