Sum of the ages of 4 children born at interval of 3 years is 34 years. What is sum of the ages of youngest and eldest child?
Show answer & explanation
Correct answer: A
Explanation
Let ages = x, x+3, x+6, x+9
Sum: 4x + 18 = 34 ⇒ 4x = 16 ⇒ x = 4
Youngest = 4 and eldest = 13 ⇒ sum = 17 years
Correct Answer: 17 years