3 years ago, the avg age of a family of 5 individuals was 17.
3 years ago, the avg age of a family of 5 individuals was 17. A kid have been born the avg age of family is an exact today? What is the age of the kid?
Answer/Solution
2 years
Steps/Work
A
2 years
Current age of 5 individuals is,
=5 x 17 + 3 x 5 = 100 years
Also, current ages of 5 persons + Age of the kid
= 6 x 17 = 102 years
Therefore, Age of the Kid = 102 – 100 = 2 years.
2 years
Current age of 5 individuals is,
=5 x 17 + 3 x 5 = 100 years
Also, current ages of 5 persons + Age of the kid
= 6 x 17 = 102 years
Therefore, Age of the Kid = 102 – 100 = 2 years.