Quantitative Aptitude

Problems on Ages

346 Questions

Problems on Ages involve calculating current, past, or future ages using ratios, averages, and simple equations. These questions are a regular feature in the arithmetic section of most competitive exams. Practicing these problems helps improve calculation speed and accuracy for time management during tests.

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Problems on Ages Questions

Multiple choice general knowledge

The Ration between the present ages of Vijay and Sanjay is 6:7. Three years hence the ratio will become 7:8 respectively. What is the present age of Vijay?

  1. 17 Years

  2. 18 Years

  3. 13 Years

  4. 25 Years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let Vijay's age = 6x and Sanjay's age = 7x. After 3 years: (6x + 3)/(7x + 3) = 7/8. Cross-multiplying: 48x + 24 = 49x + 21, giving x = 3. Vijay's present age = 6x = 6 × 3 = 18 years, so option B is correct.

Multiple choice general knowledge

Mohan and Sohan are 35 and 40 Years respectively. After how many years would the ratio of their ages become 9:10

  1. 5

  2. 10

  3. 15

  4. Can't be determined
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Current ages: Mohan = 35, Sohan = 40. Ratio 35:40 = 7:8 already. The ratio stays 7:8 forever since adding the same years preserves the ratio. Therefore, ratio is 9:10 NOW, not in the future. However, let's solve: (35 + x)/(40 + x) = 9/10. Cross-multiply: 350 + 10x = 360 + 9x, giving x = 10. Option B is correct.

Multiple choice general knowledge math & puzzles

Bob and John form a team together. Bob is as old as John will be when Bob is twice as old as John was when Bob was half as old as the sum of their current ages. John is as old as Bob was when John was half as old as he will become over ten years. How old are Bob and John?

  1. John is 35 years old and Bob 45.

  2. John is 30 years old and Bob 40.

  3. John is 40 years old and Bob 50.

  4. John is 30 years old and Bob 20.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let Bob's age = B and John's age = J. Solving the complex system of equations yields B = 40 and J = 30. The second statement gives us the key equation: J = (B/2) + 10, which with B = 40 gives J = 30. This pair satisfies the conditions of both statements. Option A (35, 45) and Option C (40, 50) don't satisfy the second condition, while Option D has ages in the wrong order.

Multiple choice general knowledge math & puzzles

Man Wrinkle spent one-fourth of his life as a boy, one-eighth as a youth, and one-half as an active man. If Man Wrinkle spent 12 years as an old man, then how many years did he spend as an active man?

  1. 48

  2. 47

  3. 49

  4. 50
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let total life = L. The fractions for boy + youth + active man = 1/4 + 1/8 + 1/2 = 7/8. So old age (12 years) = L - 7L/8 = L/8. This means L = 96 years total. Active man years = L/2 = 96/2 = 48 years. Options B (47), C (49), and D (50) are incorrect and don't result from the fraction calculation.

Multiple choice general knowledge math & puzzles

A wizard named Nepo says "I am only three times my son's age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old." How old is Nepo?

  1. 360

  2. 140

  3. Data Insufficient

  4. Cannot be determined
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let N = Nepo's age, S = son's age, F = father's age. N = 3S, F = 2N + 40 = 6S + 40. Total: S + N + F = S + 3S + (6S + 40) = 10S + 40 = 1240. So 10S = 1200, S = 120. Therefore N = 3 × 120 = 360 years.

Multiple choice general knowledge math & puzzles

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

  1. 35

  2. 39

  3. 40

  4. 42
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When an old member (age X+4) is replaced by a younger member (age Y), and the average age remains unchanged after 4 years, the total age increase from the 9 continuing members (9 × 4 = 36 years) must be offset by the age difference. So Y = (X+4) - 36 = X - 40, meaning the new member is 40 years younger than the old member.

Multiple choice general knowledge math & puzzles

A father is 30 years older than his son however he will be only thrice as old as the son after 5 years what is father's present age ?

  1. 30

  2. 40

  3. 50

  4. 60
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let son's present age be S. Father's present age = S + 30. After 5 years: son will be S + 5, father will be S + 35. Given: S + 35 = 3(S + 5), so S + 35 = 3S + 15, thus 20 = 2S, S = 10. Father's present age = 10 + 30 = 40. Verification: After 5 years, son is 15, father is 45, and 45 = 3 × 15.

Multiple choice general knowledge culture

What was the age of Jesus at crucifiction ?

  1. 30 yrs

  2. 33 yrs

  3. 35 yrs

  4. 37 yrs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Based on the Gospel accounts, Jesus was about 33 years old at crucifixion. He began his public ministry around age 30 Luke 3:23, and his ministry lasted approximately 3 years covering multiple Passovers, making 33 the widely accepted estimate.

Multiple choice general knowledge

Avg life expectancy of swaziland

  1. 35.2

  2. 32

  3. 33

  4. 34.2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Swaziland (now Eswatini) had one of the world's lowest life expectancies in the early 2000s due to the HIV/AIDS epidemic. The rate hovered around 32-35 years during this period, with the 32-year figure reflecting the peak of the crisis.

Multiple choice general knowledge math & puzzles

My grandson is about as many days as my son is weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years?

  1. 65

  2. 84

  3. 72

  4. 78
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the grandson's age be $G$, son's $S$, and grandfather's $I$. The problem states $S = 7G$ (weeks vs days) and $I = 12G$ (years vs months). Summing their ages: $G + 7G + 12G = 120$, which simplifies to $20G = 120$, so $G = 6$. Therefore, the grandfather's age is $12 \times 6 = 72$. Distractors fail to satisfy this linear ratio.

Multiple choice general knowledge

Today is Jack's 12th birthday and his father's 40th birthday.How many years from today will jack,s father be twice as old as Jack is at that time?

  1. 12

  2. 14

  3. 16

  4. 18

  5. 20
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let Jack's current age = 12, father's current age = 40. In x years, Jack will be 12+x and father will be 40+x. We need 40+x = 2(12+x), so 40+x = 24+2x, therefore x = 16. After 16 years, Jack will be 28 and father will be 56, which is exactly double.

Multiple choice general knowledge

What is the age of Auntie Muriel?

  1. 103

  2. 105

  3. 107

  4. 110
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Auntie Muriel in the Harry Potter series is described as being very old - she is 107 years old. This is mentioned in the books, emphasizing her elderly status and her role as a somewhat distant great-aunt figure. The other options (103, 105, 110) are close but not the correct age as specified in J.K. Rowling's works.

Multiple choice general knowledge sports

Kobi is puzzled by zen when she asked him a simple question. Help Kobi. The question zen asked is if There is no age difference between you and Bheriya. And fuzo is 50 years older than you and 60 years older than me. And if u multiply our age difference by 5 you get your age. What is my age?

  1. 10

  2. 50

  3. 40

  4. 35
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let Kobi's age = K. Bheriya's age = B = K (no age difference). Fuzo is 50 years older than Kobi: F = K + 50. Fuzo is 60 years older than narrator (Zen): F = Z + 60, so Z = K - 10. Age difference between Kobi and narrator: K - (K-10) = 10. 'Our age difference' multiplied by 5 gives Kobi's age: 10 × 5 = 50. But checking: K=50, B=50, F=100, Z=40. F-K = 50 (correct), F-Z = 60 (correct). Age difference between Kobi and narrator is 50-40 = 10. 10 × 5 = 50 = Kobi's age. This works! Wait, let me re-check... If K=40, B=40, F=90, Z=30. F-K = 90-40 = 50 (correct). F-Z = 90-30 = 60 (correct). Kobi-narrator age difference = 40-30 = 10. 10 × 5 = 40 = Kobi's age. So Kobi is 40, narrator is 30. Option C (40) is narrator's age.

Multiple choice general knowledge math & puzzles

Age of a son is 2. Age of the father is eleven times of the sons age. Age of the grandfather is two times of the age of father. What is the age of the grandfather?

  1. 2

  2. 22

  3. 44

  4. 88
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Son's age = 2. Father's age = 11 × 2 = 22. Grandfather's age = 2 × 22 = 44. The grandfather is 44 years old. Option A (2) is the son's age, B (22) is the father's age, and D (88) would require 4× multiplier.