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?
Answer: A
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