SOLUTION: Alex is 21 years old now and she is 3 times older than her younger brother Noel. How old is Alex when noel is born?

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Question 1132592: Alex is 21 years old now and she is 3 times older than her younger brother Noel. How old is Alex when noel is born?
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
Alex = 21 years old
:
Noel = 21/3 = 7 years old
:
When Noel was born, Alex = 21 -7 = 14 years old
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