Question

Christopher is the oldest of three sibling whose ages are consecutive odd integers. If the sum of their ages is 63, find Christopher’s age.

Answer 1

23

Explanation:

How old is Christopher?

Let x represent the youngest sibling's age

Second sibling's age: x + 2

Christopher's age : x + 4

x + x + 2 + x + 4 = 63

3x + 6

= 63

subtract by 6

3x = 63 - 6

3x = 57

divide by 3

x = 57 ÷ 3

x = 19

Christopher age is : x + 4 : 19 + 4 = 23