The ages of three siblings are all consecutive integers. The sum of their ages is 39. How old is the youngest sibling?

Question

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Answer 1

n + n + 1 + n + 2 = 39

 

Can you solve for n and answer?

Answer 2

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

3x + 3 = 39

3x = 36

x = 12 years