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Railways PYQCBT 1 2016

RRB NTPC · Question 78

The sum of the ages of 4 children born at the intervals of 4 years is 48. Find the age of the youngest child. A. 4 years B. 5 years C. 6 years D. 7 years

  1. B

  2. A

  3. D

  4. C

Show answer & explanation

Answer: (D) C

Explanation

Let the youngest be x. The four ages are x, x + 4, x + 8 and x + 12, with sum 4x + 24 = 48. So x = 6 years.