3 . Read the following information
carefully to answer the questions that follow.

The average age of 6 persons living in a house is 23.5 years. Three
of them are majors and their average age is 42 years.
The difference in ages of the three minor children is same

Total age of six persons = 23.5 × 6 = 141 years
Total age of three major persons = 42 × 3 = 126 years
∴ Total age of three minor children = 141 – 126 = 15 years
The difference in ages of the three minor children is same.
Therefore, we take ages may be:
5, 5, 5; 3, 5, 7; 2, 5, 8 and 1, 5, 9
In all the cases, median will be 5 years Mean age of minor children = $15\over3$ = 5 years

4 . Read the following information
carefully to answer the questions that follow.
The average age of 6 persons living in a house is 23.5 years. Three
of them are majors and their average age is 42 years.
The difference in ages of the three minor children is same What is the median of the ages of minor children?

Total age of six persons = 23.5 × 6 = 141 years
Total age of three major persons = 42 × 3 = 126 years
∴ Total age of three minor children = 141 – 126 = 15 years
The difference in ages of the three minor children is same.
Therefore, we take ages may be:
5, 5, 5; 3, 5, 7; 2, 5, 8 and 1, 5, 9
In all the cases, median will be 5 years.
Median age of minor children = 5 years