3 years ago, the average age of a family of 5 members was 17 years. With the birth of a new baby, the average remains the same even today. Find the age of the baby.
3 years ago average age of 5 members is 17 years
Sum of ages of 5 members, 3 years ago ⇒ 17 × 5 = 85
Average of Present age of 5 members = 20 years
Sum of present ages of 5 members = 20 × 5 = 100
But a baby born and average remains same i.e 17 years
Sum of present ages of 6 members = 17 × 6 = 102
Age of baby = 102 - 100 = 2 years
3 years ago average age of 5 members is 17 years
Sum of ages of 5 members, 3 years ago
⇒ 17 × 5 = 85
Average of Present age of 5 members = 20 years
Sum of present ages of 5 members = 20 × 5 = 100
But a baby born and average remains same i.e 17 years
Sum of present ages of 6 members = 17 × 6 = 102
Age of baby = 102 - 100 = 2 years
Related Question
View MorePromotion
Download Our Mobile Apps
