The average age of a husband and his wife was 20 years at the time of their marriage. After 6 years, they have a 2 -year old child. Find the present average age of the family.
Given:
At the time of marriage, the average age of a husband and his wife was 20 years.
After 6 years, they have a 2-year-old child.
Concept Used:
Average = Sum of components / Number of components
Calculation:
Total age at the time of their marriage = 20 × 2
⇒ 40 years
Now their total age = 40 + 6 + 6
⇒ 52 years
Total age of the family = 52 + 2 = 54 years
Average age = 54/3
⇒ 18 years
∴ The current average age of the family is 18 years.
Important Questions from Problem on Age
The ratio of the ages of A, B and C, 5 years ago, was 4 : 5 : 7. The sum of their present ages is 135 years. What will be the sum of the ages (in years) of B and C, 3 years from now?
The ratio of the present age of Mahesh and Ajay is 3 : 2 respectively. After 8 years. Ratio of their age will be 11: 8. What will be the present age of Mahesh’s son if his age is half of the present age of Ajay?
In a school, the average age of boys and girls together is 16.8 years, the average age of boys is 15.4 years, and the average age of girls is 18.2 years. The ratio of number of boys to girls in the school is:
The difference between age of Sunita and Sheela is 12 years. If 9 years ago, elder's age was 4 times of younger's age, then what are their present age?
A. 11 and 23
B. 15 and 27
C. 13 and 25
D. 23 and 35
The ratio of alpha and beta to age is 2 ∶ 5. If the sum of their ages is 238, then find the difference between their age.
