Family ages and birth-time ages: Ravi’s brother is 3 years older than Ravi. His father was 28 when his sister was born; his mother was 26 when Ravi was born. If the sister was 4 years old when the brother was born, find the father’s and mother’s ages respectively when the brother was born.

Introduction / Context:
This timeline problem relates current ages with ages at births. Build ages relative to Ravi and then rewind to the brother’s birth to get the parents’ ages then.

Given Data / Assumptions:

• Brother is Ravi + 3.
• Sister is 4 years older than brother ⇒ Sister = Ravi + 7.
• Father was 28 when sister was born; mother was 26 when Ravi was born.

Concept / Approach:
Express father and mother’s current ages in terms of Ravi’s current age R, then subtract the elapsed time back to brother’s birth.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

• Other pairs do not satisfy both parent-birth offsets consistently.

Common Pitfalls:

• Adding instead of subtracting when going back to the birth event.

Final Answer:
32 yr and 23 yr