Sum of the ages of 5 children born at interval of 4 years is 45 years. What is the age of the eldest child?
Show answer & explanation
Correct answer: A
Explanation
Let ages = x, x+4, x+8, x+12, x+16
Sum: 5x + 40 = 45 ⇒ 5x = 5 ⇒ x = 1
Eldest = x+16 = 17 years
Correct Answer: 17 years