The sum of ages of 6 children born at the intervals of 3 years each is 75 years. What is the age of the youngest child?
Answers: A) 10 B) 15 C) 6 D) 5 E) 8
Let the ages of children be x, (x + 3), (x + 6), (x + 9), (x + 12), (x+15)years.   Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) +(x+15) = 75   6x =30   x = 5.   Age of the youngest child = x = 4 years.   Answer:5
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The sum of ages of 6 children born at the intervals of 3 years each is 75 years. What is the age of the youngest child?