Question 1

Adam who is 20 years old is 4 times as old as Mary. What will be Mary's age when Adam is twice as old as her?

Accepted Answer

Question 2

A man was 31 years of age when he had his first son. His wife was 26 years of age when his son attained the age of 7 years. The difference in age between the man and his wife is :

Accepted Answer

Age of man at the birth of first son = 31 years The age of wife at the birth of her son = 26 – 7 = 19 years Required difference = Age of man at the birth of first son - The age of wife at the birth of her son Required difference = ( 31 – 19 ) years = 12 years

Question 3

At present, the ratio between the ages of Arun and Deepak is 4 : 3. After 6 years, Arun's age will be 26 years. What is the age of Deepak at present?

Accepted Answer

Question 4

The average age of 19 boys in a class is 21 years. If the teacher's age is included, the average increases to 22 years. What is the teacher's age?

Accepted Answer

The average age of 19 boys in a class = 21 years Sum total of ages of 19 boys = 19 × 21 years = 399 years The average age of 19 boys and teacher in a class = 21 years Sum total of ages of 19 boys and teacher = 20 × 22 years = 440 years ∴ Age of teacher = Sum total of ages of 19 boys and teacher - Sum total of ages of 19 boys Age of teacher = ( 440 – 399 ) years = 41 years

Question 5

The sum of the ages of father and a son presently is 70 years. After 10 years, the son's age is exactly half that of the father. What are their ages now?

Accepted Answer

Problems on Ages Questions