Problem Based on ages
- The difference between a mother’s age and the sum of her two daughters’ age is 6. The average age of two daughters is 22. What is the age of mother?
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According to question ,
Mother’s age - Sum of her two daughters’ age = 6.
The average age of two daughters = 22
Total age of two daughters = 22 × 2 = 44 years
∴ The age of their mother = Total age of two daughters + 6 yearsCorrect Option: D
According to question ,
Mother’s age - Sum of her two daughters’ age = 6.
The average age of two daughters = 22
Total age of two daughters = 22 × 2 = 44 years
∴ The age of their mother = Total age of two daughters + 6 years
The age of their mother = 44 + 6 = 50 years
- A man was 32 years of age when he had his first son. His wife was 35 years of age when his son attained the age of 7 years. The difference in age between the man and his wife is
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According to question ,
Age of his wife = 35 years
Age of his son = 7 years and Age of man = 32 years
At the birth of son, The age of mother = Age of his wife - Age of his son = 35 – 7 = 28 years
Difference in age = Age of man - age of motherCorrect Option: D
According to question ,
Age of his wife = 35 years
Age of his son = 7 years and Age of man = 32 years
At the birth of son, The age of mother = Age of his wife - Age of his son = 35 – 7 = 28 years
Difference in age = Age of man - age of mother = 32 – 28 = 4 years
- Hema was twice as old as Geetha 10 years ago. How old is Geetha today if Hema will be 40 years old 10 years hence?
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Suppose that the present age of Geetha is P years
10 years after , age of Hema = 40 years
Present age of Hema = 40 – 10 = 30 years
According to question
10 years ago , 2( present age of Geetha – 10 years ) = present age of Hema – 10
⇒ 2( P – 10 ) = 30 – 10
⇒ 2P – 20 = 20
⇒ 2P = 20 + 20 = 40Correct Option: B
Suppose that the present age of Geetha is P years
10 years after , age of Hema = 40 years
Present age of Hema = 40 – 10 = 30 years
According to question
10 years ago , 2( present age of Geetha – 10 years ) = present age of Hema – 10
⇒ 2( P – 10 ) = 30 – 10
⇒ 2P – 20 = 20
⇒ 2P = 20 + 20 = 40∴ P = 40 = 20 years 2
Hence ,the present age of Geetha is 20 years .
- Naresh’s age is 4 years less than twice the age of his brother. Which of the following represents the equation to find his age?
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Suppose the age of Naresh’s brother = P years
According to question ,
∴ Age of Naresh = 2 × age of Naresh’s brother – 4Correct Option: D
Suppose the age of Naresh’s brother = P years
According to question ,
∴ Age of Naresh = 2 × age of Naresh’s brother – 4
Therefore , Age of Naresh = 2P – 4