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Question

Among five people named V, W, X, Y and Z, each have a certain age. X is twice the age of V. V is three times the age of Y. Y is one-fifth the age of W. The age of W is 15. If Z's age is equal the age of X, what is the age of Z?

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
18

This problem requires calculating the ages of individuals based on given relationships and a starting age.

Determine Ages Based on Relationships

We are given the following information:

  • The age of W is 15.
  • Y's age is one-fifth the age of W.
  • V's age is three times the age of Y.
  • X's age is twice the age of V.
  • Z's age is equal to the age of X.

Calculate Individual Ages Step-by-Step

Follow these steps to find the ages:

  1. Calculate Y's Age:

    Y's age = \(\frac{1}{5} \times \text{W's age}\)

    Y's age = \(\frac{1}{5} \times 15 = 3\) years.

  2. Calculate V's Age:

    V's age = \(3 \times \text{Y's age}\)

    V's age = \(3 \times 3 = 9\) years.

  3. Calculate X's Age:

    X's age = \(2 \times \text{V's age}\)

    X's age = \(2 \times 9 = 18\) years.

  4. Determine Z's Age:

    Z's age is equal to X's age.

    Z's age = \(18\) years.

Final Answer Derivation

Based on the calculations, the age of Z is 18 years.

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Similar Questions

  1. The sum of the ages of a mother, son, and daughter is 70 years. If the mother is thrice as old as her son, and the daughter is 5 years older than her brother, how old is the mother?

  2. The ages of Anita and Sunita differ by 30 years. If 5 years ago, Anita was 3 times as old as Sunita, then the present age of Sunita is:

  3. The present ages of three persons are in the ratio 4 : 5 : 6. Eight years ago, the sum of their ages was 51. Find the present age of the eldest person.

  4. The sum of the ages of Yash and his father is 90 years. When Yash is as old as his father’s present age, he will be five times as old as his son Suraj’s present age. Suraj will be 12 years older than Yash’s present age, when Yash is as old as his father at present. How old is Suraj at present?

  5. The sum of the ages of a grandfather, his son, and his grandson is 128 years. The grandfather is twice as old as his son, and the son is five times as old as the grandson. Determine the age (in years) of the grandson.
  6. Among five people named V, W, X, Y and Z, each have a certain age. The age of X is 12. V is four times the age of Z. Y is half the age of V. W is thrice the age of X. If Z is one ninth the age of W, what is the age of Y?
  7. The sum of the present ages of Bunty and Bubbly is 64 years. After 2 years from now, Bunty's age will be three times that of Bubbly's age. Bunty's present age (in years) is:
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  9. The sum of the present ages of Kamlesh and Prathmesh is 52 years. After 2 years from now, Kamlesh's age will be three times that of Prathmesh's age. Kamlesh's present age (in years) is:
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Important Questions from Problem on Age

  1. The ratio of present ages of Neelam and Rajni is 6 : 7. After four years, their ages will be in the ratio of 8 : 9. What is the present age of Rajni?

  2. Five years ago the age of the son was one third of that of his mother at that time. If the sum of their present ages is 70 years, then find the present age of the mother.

  3. Jaya is 36 years old and her son Bharat is 11 years old. In how many years will Jaya be twice as Bharat's age?

  4. Five years ago, father's age was 5 times that of his son and after 3 years he will be 3 times as old as his son. Find the present age of son.

  5. The ratio of a father's age to his son's age is 3 ∶ 2 The product of the numbers representing their age is 486. The ratio of their ages after 5 years will be:

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