The sum of ages of 5 girls born at the intervals of 3 years each is 50 years. What is the age of the youngest girl?	Select the correct option
A) 4 years  B) 5 years  C) 6 years  D) 8 years  E) 9 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   5x = 20   x = 4.   Age of the youngest child = x = 4 years.   4 years)
<result>A</result>
The sum of ages of 5 girls born at the intervals of 3 years each is 50 years. What is the age of the youngest girl?