Question

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

• A. 4 years
• B. 8 years
• C. 10 years
• D. None of these

Answer 1

Answer: (A)

4 years

Let the ages of children be x, (x + 3), (x + 6), (x + 9) and (x + 12) years.
Then, $x+(x+3)+(x+6)+(x+9)+(x+12)=50$
$\Rightarrow 5x=20$
$\Rightarrow x=4$
$\therefore$ Age of the youngest child = x = 4 years.